Name: Roasted Butternut Squash Lasagna Recipe
Prep time: 30 min
Cook time: 1 h 40 min
Total time: 2 h 10 min
Cuisine: Italian
Ingredients: 1 large butternut squash (about 3 ½ to 4 pounds); 1 to 2 tablespoons olive oil; ⅔ cup milk; 1 teaspoon fresh thyme leaves (or ½ teaspoon dried thyme leaves); 2 fresh sage leaves (or ¼ teaspoon dried sage); ¾ teaspoon kosher salt; Dash of ground black pepper; ¼ cup (½ stick) salted butter; 2 large yellow onions, thinly sliced; 8 ounces sliced baby bella or white button mushrooms; ½ teaspoon chopped fresh thyme leaves (or ¼ teaspoon dried thyme leaves); 1 fresh sage leaf, chopped (or ⅛ teaspoon dried sage); Kosher salt and ground black pepper, to taste; 1 (10 ounce) package frozen chopped spinach, thawed; 15 ounces ricotta cheese (or 16 ounces small curd cottage cheese, extra liquid strained); 1 cup shredded mozzarella cheese; ¼ cup grated Parmesan cheese; 1 large egg, lightly beaten; ½ teaspoon kosher salt; ½ teaspoon garlic powder; ⅛ teaspoon ground nutmeg; 1 (12 ounce) package no-boil (“oven ready”) lasagna noodles (about 10 noodles used); 1 ½ cups shredded mozzarella cheese; ¼ cup grated Parmesan cheese; Optional garnish: chopped fresh parsley or other herbs

Jump to Recipe· 4.3 from 80 reviews

If you are craving a comforting yet wonderfully unique twist on a classic Italian favorite, the Roasted Butternut Squash Lasagna Recipe is an absolute must-try. This dish combines the creamy sweetness of perfectly roasted butternut squash with savory layers of mushrooms and a luscious ricotta spinach blend, all nestled between tender no-boil noodles and topped with gooey melted cheese. Every bite offers a vibrant harmony of flavors and textures that feels both hearty and elegant, making it a perfect centerpiece for cozy dinners or special gatherings. Trust me, once you make this recipe, it will quickly become one of your all-time favorites.

Ingredients You’ll Need

The image shows various ingredients arranged neatly on a white marbled surface. There is a clear glass bowl filled with chopped green herbs in the top center. Next to it is a small white bowl containing shredded pale yellow cheese, and a stack of uncooked yellow lasagna sheets beside it. Below the herbs is a small white bowl holding melted butter, and next to it are three white bowls with white cream or cheese, small brown and white powders, and diced onions in another white bowl. Further left, a round white bowl contains whole brown mushrooms, and there are small pieces of yellow butter on a white bowl above it. A small glass holds a clear liquid next to a long yellow butternut squash. A few sprigs of fresh herbs lie on the surface. Each bowl is placed carefully showing clear textures of the ingredients, all on the white marbled texture. photo taken with an iphone --ar 4:5 --v 7

Nothing fancy, just a handful of simple, wholesome ingredients that each bring their own magic to this Roasted Butternut Squash Lasagna Recipe. These ingredients create a balance of sweetness, earthiness, creaminess, and melty cheese that will keep everyone coming back for seconds.

Butternut squash: The star of the dish, roasted to creamy perfection, adds natural sweetness and beautiful color.

Olive oil: Helps roast the squash and adds a subtle richness.
Milk: Smooths out the squash puree to a luscious texture.
Fresh thyme and sage: Aromatic herbs that layer subtle earthiness and depth.

Kosher salt and black pepper: Essential for highlighting all the natural flavors.
Salted butter: Used to sauté onions and mushrooms, boosting savory notes.
Yellow onions: Provide sweetness and a tender bite to the mushroom layer.

Baby bella or white button mushrooms: Offer a meaty texture and umami richness.
Frozen chopped spinach: Adds a vibrant green color and healthy, fresh flavor.
Ricotta cheese: Creamy and mild, it binds the spinach layer together perfectly.

Mozzarella cheese (shredded): For gooey meltiness that pulls apart beautifully.
Parmesan cheese: Adds a sharp, nutty contrast to balance the creaminess.
Egg: Acts as a binder to keep the ricotta spinach layer firm.

Garlic powder and ground nutmeg: Elevate the ricotta layer with subtle warmth and complexity.
No-boil lasagna noodles: Make assembling quick and easy without a boil step.
Optional fresh herbs: For garnish and a burst of fresh color and flavor.

How to Make Roasted Butternut Squash Lasagna Recipe

In the image, there is a glass food processor bowl filled with a smooth, bright orange sauce that has small green herb bits mixed in. To the left of the bowl, a white bowl with pale yellow onion slices is visible. Fresh green herb sprigs lie near the food processor, and to the right, a neat stack of light yellow lasagna sheets with a subtle texture rests on the white marbled surface. The scene has a clean, fresh look with no other items crowding the space, and the food processor is centered in the frame. photo taken with an iphone --ar 4:5 --v 7

Step 1: Roast the Butternut Squash

Start by slicing your butternut squash in half and removing the seeds. Drizzle the flesh with olive oil and roast cut side down on a parchment-lined baking sheet until tender – this usually takes about 50 to 60 minutes at 400°F. Roasting deepens the squash’s natural sweetness and softens it perfectly for blending. Don’t rush this step; the sweeter and smoother your squash puree, the more luscious your lasagna will be.

Step 2: Blend the Squash Mixture

Once cooled enough to handle, scoop out the flesh and blend it in a food processor with milk, fresh thyme, sage, salt, and pepper. This mixture should be velvety smooth, allowing the herbs to infuse every creamy bite with aromatic warmth. Taste as you go and adjust the seasoning – a balanced butternut squash layer is the heart of this Roasted Butternut Squash Lasagna Recipe.

Step 3: Sauté Onions and Mushrooms

While the squash roasts, melt butter in a skillet and slowly cook the thinly sliced onions until soft and slightly caramelized. Then, crank up the heat, add mushrooms along with thyme and sage, and sauté until all the liquid evaporates. This concentrated mixture packs a savory punch that perfectly contrasts the sweetness of the squash. Season well with salt and pepper before setting aside.

Step 4: Prepare the Ricotta Spinach Layer

Drain every drop of water from your thawed spinach for a rich, creamy result. Then combine it with ricotta, shredded mozzarella, Parmesan, a beaten egg, garlic powder, nutmeg, and salt. Mix everything gently but thoroughly – this mixture adds a herby, cheesy creaminess that brings the entire dish to life.

Step 5: Assemble the Lasagna

Grease your baking dish and spread a spoonful of the butternut squash layer on the bottom. Next, add a layer of no-boil noodles followed by half of the ricotta spinach mixture and half of the mushroom mixture. Repeat with a heaping cup of squash puree, more noodles, and the remaining ricotta and mushrooms. Top everything off with the remaining squash mixture and sprinkle with mozzarella and Parmesan. Cover tightly with foil to trap moisture during baking.

Step 6: Bake Until Bubbling and Golden

Bake covered for 25 minutes at 400°F, then remove the foil and continue baking for 15 minutes until the cheese is beautifully melted and slightly browned. This final bake melds all the layers together, offering those inviting aromas that fill your kitchen and your heart.

How to Serve Roasted Butternut Squash Lasagna Recipe

Garnishes

A sprinkle of chopped fresh parsley or additional herbs like thyme or sage adds a pop of color and fresh flavor, making your lasagna even more inviting. It’s a simple touch that makes the dish feel fresh and farm-to-table.

Side Dishes

Complement this hearty lasagna with a crisp green salad dressed lightly with lemon vinaigrette, or some crusty garlic bread. The brightness and crunch of the salad balance out the creamy richness while the bread is perfect for mopping up any cheesy goodness left on your plate.

Creative Ways to Present

Try serving individual portions in small ramekins or cast-iron skillets for a charming, rustic feel. You can also layer it in a clear glass casserole dish so the layers are visible—pure eye candy! For special occasions, a light drizzle of balsamic glaze over the top just before serving adds a tangy sophistication.

Make Ahead and Storage

Storing Leftovers

This Roasted Butternut Squash Lasagna Recipe holds up beautifully in the fridge for up to 4 days. Store leftovers in an airtight container to keep all those layers fresh and flavorful. When you’re ready to enjoy it again, simply reheat gently to maintain the creamy texture and prevent drying out.

Freezing

Planning ahead? This lasagna freezes wonderfully! Assemble it completely, cover tightly in foil, and freeze for up to 3 months. When you want a comforting dinner, thaw it overnight in the fridge and bake as instructed. It’s a fantastic way to enjoy homemade goodness with minimal effort on busy nights.

Reheating

Reheat your slices in a microwave or oven until warmed through. For the oven, cover with foil and bake at 350°F for about 20 minutes to keep the dish moist. If microwaving, cover loosely and heat in short bursts to avoid overheating and drying out the cheese layers.

FAQs

Can I use fresh spinach instead of frozen in this recipe?

Absolutely! If using fresh spinach, sauté it lightly to wilt and remove excess moisture before mixing it into the ricotta layer. Make sure to squeeze out as much water as possible to avoid soggy lasagna.

Is it necessary to roast the butternut squash before blending?

Roasting the squash brings out its natural sweetness and softens it, resulting in a rich, smooth puree. Boiling or steaming can work but might produce a less flavorful result, so roasting is highly recommended.

Can I substitute dairy-free cheese for this recipe?

Yes, you can swap in your favorite dairy-free ricotta, mozzarella, and Parmesan alternatives to make this recipe vegan or dairy-free. Just note that the texture and flavor may vary slightly but will still be delicious.

What can I use if I don’t have no-boil lasagna noodles?

Traditional lasagna noodles work well but need to be boiled first until al dente before layering. Make sure to dry them thoroughly to prevent extra moisture from making your lasagna watery.

Can I prepare this lasagna a day in advance?

Definitely! Assemble the entire dish, cover it tightly with foil, and refrigerate overnight. Bake it fresh the next day for an easy, no-fuss dinner that tastes like it’s straight from the oven.

Final Thoughts

If you are looking for a show-stopping dish that feels both comforting and a little bit special, the Roasted Butternut Squash Lasagna Recipe is here to delight your taste buds and warm your soul. It’s a fantastic way to enjoy seasonal produce with loads of flavor and satisfying layers. Don’t hesitate—grab that butternut squash, gather your ingredients, and enjoy the wonderful experience of making (and eating) this beautiful lasagna. You’re going to love it!