Table of Contents

Roasted Butternut Squash, Rosemary, and Garlic Lasagna

The scent of roasting butternut squash always transports me back to crisp autumn days spent at my grandmother’s farm. She had a knack for turning simple ingredients into extraordinary meals, and this lasagna, with its comforting layers of squash, creamy sauce, and fragrant rosemary, feels like a warm hug from her kitchen. I remember one Thanksgiving, the oven was on the fritz, and she improvised, roasting the squash in the wood-fired pizza oven instead. The slight char added an unforgettable depth of flavor – a delicious accident that we’ve replicated ever since.

Recipe Overview

Prep Time: 45 minutes
Cook Time: 1 hour 5 minutes
Total Time: 1 hour 50 minutes
Servings: 6
Dietary Type: Vegetarian

Ingredients

3 lbs butternut squash, quartered, seeded, peeled, and cut into 1/2 inch dice (about 9 1/2 cups)
3 tablespoons vegetable oil
4 cups milk
2 tablespoons dried rosemary, crumbled
1 tablespoon minced garlic
1/4 cup unsalted butter
4 tablespoons all-purpose flour
9 sheets dry no-boil lasagna noodles (7×3 1/2 inch)
5 ounces freshly grated parmesan cheese (about 1 1/3 cups)
1 cup heavy cream
1/2 teaspoon salt
Salt and pepper to taste

Equipment Needed

2 large shallow baking pans
Large bowl
Saucepan
Sieve
Large pitcher or measuring cup
Whisk
Baking dish (13x9x2 inches)
Electric mixer
Aluminum foil

Instructions

Preheat your oven to 450°F (230°C) and lightly oil two large shallow baking pans.
In a large bowl, toss the butternut squash with the vegetable oil until each piece is well-coated. Spread the squash in a single layer in the prepared baking pans. This is crucial for even roasting.
Roast the squash in the preheated oven for 10 minutes. Then, season generously with salt.
Stir the squash and continue to roast for another 10 to 15 minutes, or until the squash is tender and starting to turn golden brown around the edges. Keep a close eye on it to prevent burning; every oven is different.
While the squash is roasting, prepare the rosemary-infused milk. In a saucepan, bring the milk to a simmer with the dried rosemary. Ensure the heat is low to prevent scorching.
Heat the milk mixture over low heat for 10 minutes to allow the rosemary to infuse the milk.
Pour the infused milk through a sieve into a large pitcher or measuring cup to remove the rosemary sprigs. Discard the rosemary.
In a large heavy saucepan, cook the minced garlic in the unsalted butter over moderately low heat, stirring constantly, until the garlic is softened and fragrant. This usually takes about 2-3 minutes. Avoid browning the garlic, as it can become bitter.
Stir in the all-purpose flour and cook the roux, stirring constantly, for 3 minutes. This step is essential for thickening the sauce. The roux should be smooth and slightly golden.
Remove the pan from the heat and slowly whisk in the rosemary-infused milk in a steady stream until the sauce is smooth and free of lumps. Whisk vigorously to ensure there are no clumps.
Return the pan to the heat and simmer the sauce, whisking occasionally, for about 10 minutes, or until the sauce has thickened to your desired consistency. It should be able to coat the back of a spoon.
Stir the roasted butternut squash into the thickened sauce. Season with salt and pepper to taste. At this stage, you can adjust the seasoning to your liking.
Reduce the oven temperature to 375°F (190°C). Lightly butter a baking dish, ideally one that is 13x9x2 inches.
Pour 1 cup of the squash sauce into the buttered baking dish. The sauce will not completely cover the bottom, but that’s okay.
Cover the sauce with 3 lasagna sheets, making sure the noodles do not touch each other. This helps prevent them from sticking together during baking.
Spread half of the remaining squash sauce evenly over the pasta layer.
Sprinkle 1/2 cup of the Parmesan cheese over the sauce.
Make one more layer in the same manner: lasagna sheets, remaining squash sauce, and another 1/2 cup of Parmesan cheese. End with a layer of pasta.
In a bowl, using an electric mixer, beat the heavy cream with the remaining salt until it forms soft peaks. Be careful not to overbeat the cream, or it will turn into butter.
Spread the whipped cream evenly over the top pasta layer, ensuring the pasta is completely covered. This prevents the noodles from drying out during baking.
Sprinkle the remaining 1/3 cup of Parmesan cheese over the whipped cream.
Cover the dish tightly with aluminum foil, tenting it slightly to prevent the foil from touching the top layer of cheese and cream. This helps the lasagna bake evenly and prevents the top from browning too quickly.
Bake in the middle of the preheated oven for 30 minutes.
Remove the foil and bake for an additional 10 minutes, or until the top is bubbling and golden brown. Keep a close eye on it during this final stage to prevent burning.
Let the lasagna stand for 5 minutes before serving. This allows the lasagna to set and makes it easier to slice.
Garnish each serving with fresh rosemary, if desired.

Expert Tips & Tricks

To enhance the flavor of the butternut squash, consider adding a pinch of nutmeg or a dash of cinnamon to the roasting process.
If you find the sauce is too thick, add a splash of milk to loosen it up. Conversely, if it’s too thin, simmer it for a few more minutes to allow it to thicken.
For a richer flavor, use browned butter instead of regular unsalted butter when making the roux.
If you want to make the lasagna ahead of time, assemble it completely but do not bake it. Cover it tightly and refrigerate it for up to 24 hours. When ready to bake, add an extra 10-15 minutes to the baking time.

Serving & Storage Suggestions

Serve the Roasted Butternut Squash, Rosemary, and Garlic Lasagna warm, garnished with fresh rosemary sprigs for a pop of color and fragrance. It pairs beautifully with a simple green salad and a crisp white wine.

Leftovers can be stored in an airtight container in the refrigerator for up to 3 days. To reheat, cover the lasagna with foil and bake in a preheated oven at 350°F (175°C) until heated through, about 20-30 minutes. You can also reheat individual portions in the microwave. For longer storage, freeze the lasagna for up to 2 months. Thaw it in the refrigerator overnight before reheating.

Nutritional Information

Nutrient	Amount per Serving	% Daily Value
Calories	597 kcal	N/A
Calories from Fat	380 g	64%
Total Fat	42.3 g	65%
Saturated Fat	22.8 g	114%
Cholesterol	118.2 mg	39%
Sodium	660.8 mg	27%
Total Carbohydrate	41.2 g	13%
Dietary Fiber	5.2 g	20%
Sugars	5.3 g	21%
Protein	18.2 g	36%

Note: Nutritional information is an estimate and can vary based on specific ingredients and portion sizes.

Variations & Substitutions

Vegan Option: Substitute the milk with unsweetened almond milk or cashew milk, the butter with vegan butter, the Parmesan cheese with nutritional yeast, and the heavy cream with coconut cream.
Gluten-Free: Use gluten-free lasagna noodles.
Spice it Up: Add a pinch of red pepper flakes to the squash sauce for a touch of heat.
Other Vegetables: Experiment with adding other roasted vegetables like zucchini, eggplant, or bell peppers to the lasagna.
Cheese Variations: Use other cheeses like ricotta, mozzarella, or goat cheese in addition to or instead of Parmesan.

FAQs (Frequently Asked Questions)

Q: Can I use fresh lasagna noodles instead of no-boil noodles?
A: Yes, you can use fresh lasagna noodles, but you may need to pre-cook them slightly before assembling the lasagna to ensure they cook through properly. Follow the package instructions for pre-cooking.

Q: Can I make this lasagna a day ahead of time?
A: Absolutely! Assembling the lasagna a day ahead of time allows the flavors to meld together even more. Just cover it tightly and refrigerate it until you’re ready to bake. Add about 10-15 minutes to the baking time.

Q: How do I prevent the top of the lasagna from burning?
A: To prevent burning, make sure to tent the foil properly, and remove the foil during the last 10 minutes of baking to allow the top to brown without burning. If it starts to brown too quickly, you can loosely cover it with foil again.

Q: Can I use a different type of squash?
A: While butternut squash is ideal for its sweetness and texture, you can substitute it with other types of squash like acorn squash or kabocha squash. Just adjust the roasting time as needed.

Q: My sauce is too thick. What can I do?
A: If your sauce is too thick, simply add a splash of milk or vegetable broth to thin it out to your desired consistency.

Final Thoughts

This Roasted Butternut Squash, Rosemary, and Garlic Lasagna is more than just a recipe; it’s an invitation to create a comforting and memorable meal. Gather your ingredients, embrace the process, and don’t be afraid to add your own personal touch. Whether you’re sharing it with family, friends, or simply savoring it on your own, this lasagna is sure to bring warmth and joy to your table. I hope you enjoy making and eating this delicious dish as much as I do. Please share your creations and feedback – I’d love to hear how it turns out for you! Consider pairing this lasagna with a side of crusty bread and a glass of Pinot Grigio for a truly delightful culinary experience.

Roasted Butternut Squash, Rosemary, and Garlic Lasagna Recipe