Imagine tender, sweet roasted butternut squash layered between delicate pasta sheets, all enveloped in a velvety, herb-infused béchamel sauce. This is the creamiest butternut squash lasagna, baked until bubbling and golden.
It’s a truly indulgent dish that has been tested and perfected to guarantee success in your own kitchen.
The result is an elegant, deeply flavorful meal perfect for a cozy dinner or to impress guests during the holidays. Here, a rich, cheesy sauce is the star of the show, bringing a luxurious texture to every single bite.
This foolproof recipe breaks down every step, ensuring you achieve that perfect balance of sweet, savory, and creamy.
Prepare to add a new seasonal favorite to your collection.
Quick Overview: Making Your Butternut Squash Lasagna
This quick guide gives you a snapshot of what to expect. Here are the key details and the main steps to create this delicious lasagna.
- Prep Time: 15 minutes
- Cook Time: 1 hours 10 minutes
- Servings: 8 to 10
- Roast the diced butternut squash until tender and caramelized.
- Prepare the creamy béchamel sauce, infusing it with herbs and blending in the roasted squash.
- Assemble the lasagna by layering the soaked noodles with the sauce and Parmesan, then bake until golden and bubbling.
Why This Butternut Squash Lasagna Recipe Works
This recipe’s success lies in a few key techniques that guarantee a perfectly creamy, deeply flavorful result every time. Each step is designed to build layers of texture and taste, ensuring a truly exceptional dish.
First, we roast the butternut squash at 450°F. This high heat doesn’t just cook the squash; it caramelizes its natural sugars, creating a rich, nutty sweetness that you simply can’t achieve by boiling. This forms the delicious foundation of the lasagna.
Next, the béchamel sauce is elevated by infusing the milk with fresh rosemary and sage. This simple step adds an aromatic, savory depth that perfectly balances the sweetness of the squash, creating a complex and sophisticated sauce.
Finally, the method for handling the pasta is crucial for achieving the perfect texture.
Pro-Tip: Briefly soaking the no-boil noodles in hot water for about 30 seconds before layering is the secret to success. This pre-hydrates them just enough to ensure they cook perfectly without absorbing too much moisture from the sauce, preventing a dry lasagna.
These thoughtful details are precisely what makes this recipe foolproof and unforgettable.
What You’ll Need
The magic of this lasagna comes from a well-curated list of ingredients. We’re using fresh herbs to build a flavorful béchamel and roasting the butternut squash to bring out its natural sweetness. Having everything measured and ready will make the cooking process smooth and enjoyable.
Full List of Ingredients
- 3 pounds butternut squash (about 8 cups), quartered, seeded, peeled, and cut into 1/2-inch dice
- 3 tablespoons grapeseed or olive oil
- 4 cups 2% or whole milk
- A few sprigs of fresh rosemary
- A few sprigs of fresh sage
- 1 tablespoon minced garlic
- 4 tablespoons unsalted butter
- 4 tablespoons all-purpose flour
- 9 sheets dry no-boil lasagne pasta (7– by 3 1/2-inch sheets)
- 1 1/3 cups freshly grated Parmesan
- 1 cup heavy cream
- 1/2 teaspoon kosher salt
- To taste black pepper
Mastering the Butternut Squash: Selection and Prep
The foundation of this lasagna is perfectly prepared butternut squash. Choosing the right one and prepping it correctly is key to unlocking its deep, sweet flavor.
When selecting your squash, look for one with a solid beige color and a firm, matte skin. It should feel heavy for its size and be free of soft spots, blemishes, or deep cuts. The stem should be intact and dry.
The safest way to prep is to first trim off the top and bottom to create stable, flat surfaces. Use a sharp vegetable peeler to remove the skin. Then, cut the squash in half lengthwise, scoop out the seeds, and dice it into uniform 1/2-inch cubes.
We roast the squash instead of boiling it for one crucial reason: caramelization. Roasting at a high heat brings out the squash’s natural sugars, creating a rich, nutty flavor that boiling would simply wash away, leaving you with a watery, bland result. This step is non-negotiable for a deeply flavorful sauce.
Let’s Make the Roasted Butternut Squash
Roasting the butternut squash is the key to unlocking its deep, sweet, and nutty flavor. This simple process caramelizes the natural sugars, creating a rich base for our creamy sauce. Follow these steps carefully for perfectly tender, golden squash.
Roast the Squash
First, preheat your oven to 450°F. Spread the diced squash onto either one extra-large or two standard-sized sheet pans. Using two pans prevents overcrowding and promotes even browning, so don’t be afraid to give the squash plenty of space.
Toss the squash with 2 tablespoons of oil for a large pan, or 1 tablespoon each for two smaller pans. Season generously with kosher salt and black pepper, then toss everything together until each piece is lightly coated.
Cook Until Tender
Place the pan(s) in the preheated oven and cook for about 30 minutes. It’s crucial to toss the squash halfway through this time to ensure all sides cook evenly.
You’ll know it’s ready when the squash is fork-tender and just beginning to turn a beautiful golden brown on the edges. This caramelization is pure flavor.
The Secret to a Perfect Butternut Squash Béchamel
The soul of this lasagna is its luxurious béchamel sauce. It’s more than just a binder; it’s a carefully constructed layer of flavor that transforms the dish from good to unforgettable, providing a creamy counterpoint to the sweet, roasted squash.
The foundation of any great béchamel is the roux, a mixture of equal parts fat (4 tablespoons unsalted butter) and 4 tablespoons all-purpose flour. Cooking this paste for about 3 minutes is a critical step. It toasts the flour to eliminate any raw taste and prepares the starches to effectively thicken the sauce into a velvety consistency.
What truly elevates this sauce is the herb infusion. We gently simmer the milk with sprigs of fresh rosemary and sage. This step is non-negotiable for depth of flavor, as it allows the aromatic oils to meld into the milk, creating a savory complexity that perfectly balances the butternut squash.
To guarantee a silky, lump-free sauce, technique is everything. After making the roux, remove the pan from the heat and whisk in the warm, infused milk in a slow, steady stream. This gradual incorporation prevents the flour from clumping. Return it to the heat and simmer until thick.
Infusing the Milk and Making the Béchamel
While the squash roasts, we’ll create the creamy, aromatic heart of the lasagna. This herb-infused béchamel is the secret to a deeply flavorful and luxurious final dish. Following these steps ensures a perfectly smooth sauce every time.
Infuse the Milk
In a saucepan, bring 4 cups of milk to a simmer with a few sprigs of fresh rosemary and sage. Let it infuse over low heat for 10 minutes to absorb the wonderful herbal flavors. Strain the milk through a sieve into a large pitcher or measuring cup to remove the solids.
Make the Roux
Next, in a large heavy saucepan, cook 1 tablespoon of minced garlic in 4 tablespoons of unsalted butter over moderately low heat until softened. Stir in 4 tablespoons of all-purpose flour and cook the roux for about 3 minutes, stirring often. This step is essential for thickening the sauce and cooking out any raw flour taste.
Simmer the Sauce
Remove the pan from the heat and whisk in the infused milk in a steady stream until completely smooth. Return the pan to the heat and simmer for about 10 minutes, whisking occasionally, until the sauce is thick. Finally, stir in the roasted squash, 1/2 teaspoon kosher salt, and pepper.
Assembling Your Butternut Squash Lasagna
With your roasted squash sauce ready, it’s time to build the layers. Paying close attention to how you prepare the noodles is the key to ensuring a perfectly cooked, never-dry lasagna.
Pro-Tip: The secret to perfect no-boil noodles is a quick soak. Dunking them in hot water for just 30 seconds softens them just enough to absorb the sauce and cook evenly without stealing all the moisture.
Preheat and Prep
First, adjust your oven temperature to 375°F. Generously butter a 9×13-inch baking dish; this prevents sticking and adds a subtle richness to the edges of the final dish.
Soak the Noodles
To prepare for soaking, bring a small pot of water to a boil and carefully pour it into a shallow vessel, such as a 9-inch baking dish. Working in batches of three, dunk the lasagna sheets into the hot water for about 30 seconds. Use tongs to carefully extract the softened noodles.
Layer the Lasagna
Follow this sequence for a perfectly structured lasagna:
- Base Layer: Pour 1 cup of the butternut squash sauce into the prepared baking dish. Top with 3 soaked lasagna sheets, making sure they do not touch each other.
- Second Layer: Spread half of the remaining sauce (about 2 cups) over the noodles and sprinkle with 1/2 cup of Parmesan. Top with three more soaked noodles.
- Third Layer: Spread the remaining sauce over the noodles and top with another 1/2 cup of Parmesan. Place the final layer of 3 soaked noodles on top.
Your lasagna is now assembled and ready for its final creamy topping before baking.
Baking Your Butternut Squash Masterpiece
The final bake is a two-step process to achieve a perfectly cooked interior and a beautifully golden-brown top. Covering the dish first allows everything to cook through evenly.
Top and Bake
For a rich, luxurious finish, beat the heavy cream with salt until it holds soft peaks. Spread this evenly over the top pasta layer, making sure the noodles are completely covered. Sprinkle the remaining 1/3 cup Parmesan over the cream.
Cover the dish tightly with foil, tenting it slightly to prevent it from touching the cream. Bake in the middle of your 375°F oven for 30 minutes.
Uncover and Finish
Carefully remove the foil and return the lasagna to the oven. Bake for another 10 to 20 minutes. You’ll know it’s done when the top is bubbling and has turned a lovely golden brown.
Pro-Tip: Let the lasagna stand for at least 5 minutes before cutting. This crucial rest period allows the layers to set, ensuring clean, beautiful slices.
Once your lasagna has rested, it’s ready to serve and enjoy.
Your Complete Make-Ahead & Freezing Guide
This butternut squash lasagna is an excellent dish for entertaining precisely because it can be prepared almost entirely in advance. Proper storage is key to preserving its creamy texture and rich flavor. Here’s how to make it ahead or freeze it for a future meal.
Making Ahead
You can fully assemble the lasagna up to 24 hours before you plan to serve it. Follow all the layering instructions right up to the final sprinkle of Parmesan cheese.
Cover the baking dish tightly with foil and place it in the refrigerator. When you’re ready to bake, you may need to add an extra 10 to 15 minutes to the initial covered baking time, as it will be starting from cold.
Freezing Instructions
For the best results, we strongly recommend baking the lasagna completely before you freeze it. This crucial step prevents the sauce from becoming watery upon thawing and ensures a perfectly creamy texture.
Pro-Tip: This lasagna freezes best after baking. Let it cool completely, then cut it into individual portions, wrap them tightly, and freeze. This allows for perfect reheating without the risk of a watery, unbaked lasagna.
Once the lasagna has cooled completely, you can wrap the entire dish in plastic wrap and then a layer of foil. For easier meals, cut it into individual portions and wrap each one securely. It will keep well in the freezer for up to 3 months.
Reheating Instructions
There’s no need to thaw the lasagna before reheating.
- For the entire dish: Preheat the oven to 350ºF. Cover the frozen lasagna with foil and bake for 20 minutes. Then, remove the foil and bake for another 15-20 minutes, or until it’s bubbling and heated through.
- For individual slices: Place the frozen portions on a baking sheet and bake at 350ºF for 15-20 minutes until hot and bubbly.
Creative Variations and Substitutions
While this butternut squash lasagna is a standout on its own, it also serves as a fantastic base for customization. Here are a few tested variations to tailor it to your specific tastes or dietary needs.
- Add Protein or Veggies: For a heartier dish, you can layer in sautéed mushrooms for an earthy depth. Cooked, shredded chicken is another excellent addition for a non-vegetarian option.
- Swap the Squash: If you don’t have butternut squash on hand, an equal amount of roasted pumpkin or another sweet winter squash will work beautifully as a substitute.
- Make it Dairy-Free/Vegan: Create a vegan béchamel using almond milk and your preferred vegan butter. Omit the heavy cream and use a high-quality vegan Parmesan cheese substitute throughout the layers.
- Go Gluten-Free: Simply swap the standard pasta for your favorite brand of gluten-free no-boil lasagna noodles. The soaking method works perfectly to ensure they cook through.
These simple swaps allow you to adapt the dish without sacrificing its creamy texture and rich flavor.
Troubleshooting Tips for Butternut Squash Lasagna
Even a well-tested recipe can present a few challenges. Here are solutions to common issues to ensure your lasagna is a success.
Is your lasagna dry? The most likely reason is the noodles. The mandatory 30-second soak in hot water is non-negotiable. This step pre-hydrates the no-boil sheets, preventing them from absorbing too much liquid from the béchamel sauce during baking.
Is the sauce consistency off? If the sauce is too thin, it may not have simmered for the full 10 minutes needed to thicken. For a lumpy sauce, the milk was likely added too quickly to the roux. Whisking constantly while pouring the milk in a slow, steady stream is key to a perfectly smooth texture.
Is it cooking unevenly? If one side is browning faster than the other, simply rotate the dish halfway through the final uncovered baking time to ensure a beautiful, evenly golden crust.
Understanding Key Concepts for Success
A few key details make this recipe foolproof. Understanding why they work is the secret to achieving a perfect result every single time.
No-boil lasagna noodles are designed to absorb liquid directly from the sauce as they bake. Our quick-soak method is vital because it jumpstarts this hydration, ensuring the pasta cooks evenly and doesn’t steal too much moisture from the butternut squash sauce.
This lasagna is an ideal dish for entertaining precisely because the make-ahead instructions allow the flavors to meld and deepen as it rests overnight, resulting in an even more delicious final product.
Frequently Asked Questions
Can you make this lasagna ahead of time?
Yes! You can assemble the lasagna and keep it in the refrigerator for up to 24 hours before baking. This allows the flavors to meld together beautifully.
Can you freeze this lasagna?
Yes, this lasagna freezes well after baking. Let it cool completely, then wrap it tightly in plastic wrap and foil before freezing for up to 3 months.
Do you have to boil no-boil noodles after all?
No-boil noodles don’t require boiling, but briefly soaking them in hot water before assembly helps them soften and cook evenly in the lasagna, preventing a dry result.
Hi can I use frozen spinach?
Yes, you can use frozen spinach. Thaw it completely and squeeze out all the excess water before adding it to the lasagna.
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Creamy butternut squash lasagna with a velvety, herb-infused béchamel. This foolproof recipe is perfect for a cozy dinner or holiday meal!
Creamiest Butternut Squash Lasagna
Equipment
- Sheet pans
- Saucepan
- Whisk
- Sieve
- 9x13-inch baking dish
- Tongs
Ingredients
- 3 pounds butternut squash (about 8 cups), quartered, seeded, peeled, and cut into 1/2-inch dice
- 3 tablespoons grapeseed or olive oil
- 4 cups 2% or whole milk
- A few sprigs of fresh rosemary
- A few sprigs of fresh sage
- 1 tablespoon minced garlic
- 4 tablespoons unsalted butter
- 4 tablespoons all-purpose flour
- 9 sheets dry no-boil lasagne pasta (7– by 3 1/2-inch sheets)
- 1 1/3 cups freshly grated Parmesan
- 1 cup heavy cream
- 1/2 teaspoon kosher salt plus more for seasoning
- Black pepper, to taste
Instructions
Roast the Butternut Squash
- Preheat your oven to 450°F. Spread the diced squash onto one extra-large or two standard-sized sheet pans. Using two pans prevents overcrowding and promotes even browning.
- Toss the squash with 2 tablespoons of oil for a large pan, or 1 tablespoon each for two smaller pans. Season generously with kosher salt and black pepper, then toss until each piece is lightly coated.
- Place the pan(s) in the preheated oven and cook for about 30 minutes, tossing the squash halfway through. The squash is ready when it is fork-tender and beginning to turn golden brown on the edges.
Make the Béchamel Sauce
- While the squash roasts, infuse the milk. In a saucepan, bring 4 cups of milk to a simmer with a few sprigs of fresh rosemary and sage. Let it infuse over low heat for 10 minutes. Strain the milk through a sieve into a large pitcher or measuring cup to remove the solids.
- In a large heavy saucepan, cook 1 tablespoon of minced garlic in 4 tablespoons of unsalted butter over moderately low heat until softened. Stir in 4 tablespoons of all-purpose flour and cook the roux for about 3 minutes, stirring often.
- Remove the pan from the heat and whisk in the infused milk in a steady stream until completely smooth. Return the pan to the heat and simmer for about 10 minutes, whisking occasionally, until the sauce is thick. Stir in the roasted squash, 1/2 teaspoon kosher salt, and pepper to taste.
Assemble the Lasagna
- Adjust your oven temperature to 375°F. Generously butter a 9×13-inch baking dish.
- Bring a small pot of water to a boil and pour it into a shallow vessel. Working in batches of three, dunk the lasagna sheets into the hot water for about 30 seconds. Use tongs to carefully extract the softened noodles.
- Pour 1 cup of the butternut squash sauce into the prepared baking dish. Top with 3 soaked lasagna sheets, ensuring they do not touch. Spread half of the remaining sauce (about 2 cups) over the noodles and sprinkle with 1/2 cup of Parmesan. Top with three more soaked noodles. Spread the remaining sauce over the noodles and top with another 1/2 cup of Parmesan. Place the final layer of 3 soaked noodles on top.
Bake and Finish
- For the topping, beat the heavy cream with a pinch of salt until it holds soft peaks. Spread this evenly over the top pasta layer, making sure the noodles are completely covered. Sprinkle the remaining 1/3 cup Parmesan over the cream.
- Cover the dish tightly with foil, tenting it slightly. Bake in the middle of your 375°F oven for 30 minutes.
- Carefully remove the foil and return the lasagna to the oven. Bake for another 10 to 20 minutes, until the top is bubbling and golden brown.
- Let the lasagna stand for at least 5 minutes before cutting. This allows the layers to set for clean slices.
Notes
- Add Protein or Veggies: Layer in sautéed mushrooms or cooked, shredded chicken.
- Swap the Squash: Roasted pumpkin works as a substitute.
- Dairy-Free/Vegan: Use almond milk, vegan butter, and vegan Parmesan. Omit the heavy cream.
- Gluten-Free: Use gluten-free no-boil lasagna noodles.