This is the kind of lasagna that makes a chilly evening feel warmer. Layers of tender roasted butternut squash, garlicky kale, and creamy ricotta tuck into noodles with just the right amount of cheese. It’s hearty without being heavy, and it brings a lovely balance of sweet and savory.
If you enjoy classic lasagna but want something a little lighter and brighter, this is a great twist. It also works beautifully for a family dinner or a make-ahead meal for the week.
What Makes This Special
This lasagna leans into fall flavors without going overboard. The natural sweetness of roasted butternut squash meets the earthy bite of kale, and the result is rich but refreshing.
A simple white sauce or ricotta mixture ties everything together, while mozzarella and Parmesan add that familiar stretchy, salty finish.
- Balanced flavor: Sweet squash, savory greens, and tangy cheese in each bite.
- Comforting yet lighter: No heavy meat sauce, but still deeply satisfying.
- Make-ahead friendly: Assembles well and bakes up beautifully later.
- Flexible: Works with oven-ready noodles or classic boiled lasagna sheets.
Ingredients
- 1 medium butternut squash (about 2–2.5 pounds), peeled, seeded, and cut into 1/2-inch cubes
- 2 tablespoons olive oil, divided (plus more as needed)
- 1 teaspoon kosher salt, divided (adjust to taste)
- 1/2 teaspoon black pepper, divided
- 1/2 teaspoon smoked paprika or sweet paprika (optional, for squash)
- 1 small yellow onion, finely chopped
- 3–4 cloves garlic, minced
- 1 large bunch kale (lacinato or curly), stems removed and leaves chopped
- 1/4 teaspoon red pepper flakes (optional)
- 15 ounces ricotta cheese (whole milk or part skim)
- 1 large egg
- 1/2 cup grated Parmesan or Pecorino Romano, plus extra for topping
- 1 teaspoon dried thyme or 1 tablespoon fresh thyme leaves
- 1 lemon, zested (optional, but brightens the filling)
- 2 cups shredded mozzarella
- 9–12 lasagna noodles (oven-ready or cooked according to package)
- 1–1.5 cups milk or half-and-half (to loosen ricotta and create a light white sauce texture)
- Butter for greasing the baking dish
How to Make It
- Heat the oven: Preheat to 400°F (200°C). Lightly butter a 9×13-inch baking dish.
- Roast the squash: Toss the butternut cubes with 1 tablespoon olive oil, 1/2 teaspoon salt, 1/4 teaspoon pepper, and paprika if using. Spread on a sheet pan and roast 22–28 minutes, stirring once, until tender and lightly caramelized.
- Sauté the aromatics: In a large skillet over medium heat, warm the remaining tablespoon of olive oil. Add onion and cook 4–5 minutes until softened. Stir in garlic and cook 30 seconds until fragrant.
- Wilt the kale: Add chopped kale and a pinch of salt. Cook 3–5 minutes, stirring, until wilted and bright green. Add red pepper flakes if you like a little heat. Remove from heat.
- Mix the ricotta layer: In a bowl, combine ricotta, egg, Parmesan, thyme, lemon zest, 1/4 teaspoon salt, and a few grinds of pepper. Stir in 1/2 cup milk to loosen. The mixture should be creamy and spreadable; add more milk in small splashes until it resembles a thick sauce.
- Prep the noodles: If not using oven-ready noodles, cook lasagna sheets in well-salted water until just shy of al dente. Drain and lay flat on a lightly oiled sheet to prevent sticking.
- Assemble the first layer: Spread a thin layer of the ricotta mixture over the bottom of the baking dish to prevent sticking. Lay down the first layer of noodles.
- Layer the fillings: Spread a generous layer of ricotta mixture over the noodles. Scatter a third of the roasted squash and a third of the kale on top. Sprinkle with mozzarella and a teaspoon or two of Parmesan.
- Repeat: Add another layer of noodles and repeat the ricotta, squash, kale, and cheese. Do this for 3 layers total, finishing with noodles on top.
- Top and moisten: Spread any remaining ricotta mixture over the top noodles. If it seems dry, drizzle 1/4–1/2 cup milk around the edges so the top layer stays tender. Finish with the remaining mozzarella and a light shower of Parmesan.
- Bake: Cover the dish with foil (tent it slightly so it doesn’t stick to the cheese). Bake at 375°F (190°C) for 25 minutes, then uncover and bake another 12–18 minutes, until bubbly and golden in spots.
- Rest: Let the lasagna rest 10–15 minutes before slicing. This helps it set and makes cleaner slices.
- Serve: Garnish with extra Parmesan or fresh thyme if you like. A simple green salad balances the richness.
Storage Instructions
- Refrigerator: Cool completely, then cover tightly. Store up to 4 days.
- Freezer (unbaked): Assemble in a freezer-safe dish, wrap well, and freeze up to 2 months. Bake from frozen, covered, at 350°F (175°C) for about 60–75 minutes, then uncover to brown.
- Freezer (baked): Cool, portion into slices, wrap, and freeze up to 2 months. Reheat covered at 350°F (175°C) for 25–35 minutes or until hot in the center.
- Microwave reheat: For single servings, reheat on medium power, then finish on high for 30–60 seconds to avoid rubbery cheese.
Benefits of This Recipe
- Vegetable-forward: You get a good amount of squash and leafy greens in a familiar comfort food format.
- Make-ahead convenience: Great for meal prep, potlucks, or hosting without last-minute stress.
- Kid-friendly flavors: The sweetness of squash and creamy cheeses help picky eaters warm up to kale.
- Customizable: Easy to adapt with different cheeses, herbs, or add-ins without losing the spirit of the dish.
Pitfalls to Watch Out For
- Watery lasagna: If the ricotta is very wet, the lasagna can turn soupy. Loosen it with milk gradually and avoid overloading with extra liquid.
- Underseasoning: Season each component—squash, kale, and ricotta—so the final layers taste vibrant.
- Tough top noodles: Add a little milk around the edges and cover with foil to prevent drying out.
- Overcrowded pan: If layers are too thick, the center may not heat evenly.Keep layers balanced.
Variations You Can Try
- Sage brown butter: Drizzle a little brown butter infused with fresh sage over the squash for a nutty, autumnal note.
- Goat cheese swirl: Add dollops of soft goat cheese between layers for tang and creaminess.
- Gluten-free: Use gluten-free lasagna sheets and confirm cheeses are GF-friendly.
- Vegan version: Swap ricotta and mozzarella for plant-based alternatives, use nondairy milk, and brush noodles with olive oil to keep them tender.
- Add mushrooms: Sauté sliced creminis until browned and layer with the kale for extra umami.
- Pesto twist: Thin a few tablespoons of pesto with milk and swirl into the ricotta layer for herbal brightness.
FAQ
Can I use frozen butternut squash?
Yes, but roast it from frozen on a hot sheet pan to drive off excess moisture and get some caramelization. You may need to extend roasting time by a few minutes.
Do I have to pre-cook the kale?
It’s best to. Raw kale can release water and stay tough.
A quick sauté softens it, concentrates flavor, and helps the lasagna set nicely.
What can I use instead of ricotta?
Cottage cheese blended until smooth works well, or a mix of mascarpone and a splash of milk for extra richness. Adjust salt since mascarpone is milder.
Can I make this ahead?
Absolutely. Assemble up to 24 hours in advance, cover, and refrigerate. Add 10–15 minutes to the covered bake time since it will be cold.
How do I prevent the noodles from sticking?
If using cooked noodles, toss them lightly with olive oil after draining and lay them flat on a sheet. For oven-ready noodles, make sure there’s enough moisture from the ricotta mixture and a little extra milk at the edges.
What cheese blend melts best?
A mix of low-moisture mozzarella for stretch and Parmesan for sharpness is reliable. You can add fontina or provolone for a creamier melt.
Can I add protein?
Yes. Cooked Italian chicken sausage or shredded rotisserie chicken layers in easily. Keep the overall moisture in check and season well.
How do I know it’s done?
The edges should bubble, the top should be golden in spots, and a knife inserted in the center should feel hot to the touch. Resting time is key for clean slices.
Final Thoughts
Butternut Squash and Kale Lasagna brings cozy comfort with a fresh, modern feel.
It’s simple enough for a weeknight if you roast the squash ahead, yet special enough for company. Keep the layers balanced, season as you go, and let it rest before serving. You’ll get a pan of creamy, vegetable-packed goodness that tastes like fall, any time of year.
Butternut Squash and Kale Lasagna - Cozy, Creamy, and Comforting
Ingredients
- 1 medium butternut squash (about 2–2.5 pounds), peeled, seeded, and cut into 1/2-inch cubes
- 2 tablespoons olive oil, divided (plus more as needed)
- 1 teaspoon kosher salt, divided (adjust to taste)
- 1/2 teaspoon black pepper, divided
- 1/2 teaspoon smoked paprika or sweet paprika (optional, for squash)
- 1 small yellow onion, finely chopped
- 3–4 cloves garlic, minced
- 1 large bunch kale (lacinato or curly), stems removed and leaves chopped
- 1/4 teaspoon red pepper flakes (optional)
- 15 ounces ricotta cheese (whole milk or part skim)
- 1 large egg
- 1/2 cup grated Parmesan or Pecorino Romano, plus extra for topping
- 1 teaspoon dried thyme or 1 tablespoon fresh thyme leaves
- 1 lemon, zested (optional, but brightens the filling)
- 2 cups shredded mozzarella
- 9–12 lasagna noodles (oven-ready or cooked according to package)
- 1–1.5 cups milk or half-and-half (to loosen ricotta and create a light white sauce texture)
- Butter for greasing the baking dish
Instructions
- Heat the oven: Preheat to 400°F (200°C). Lightly butter a 9x13-inch baking dish.
- Roast the squash: Toss the butternut cubes with 1 tablespoon olive oil, 1/2 teaspoon salt, 1/4 teaspoon pepper, and paprika if using. Spread on a sheet pan and roast 22–28 minutes, stirring once, until tender and lightly caramelized.
- Sauté the aromatics: In a large skillet over medium heat, warm the remaining tablespoon of olive oil. Add onion and cook 4–5 minutes until softened. Stir in garlic and cook 30 seconds until fragrant.
- Wilt the kale: Add chopped kale and a pinch of salt. Cook 3–5 minutes, stirring, until wilted and bright green. Add red pepper flakes if you like a little heat. Remove from heat.
- Mix the ricotta layer: In a bowl, combine ricotta, egg, Parmesan, thyme, lemon zest, 1/4 teaspoon salt, and a few grinds of pepper. Stir in 1/2 cup milk to loosen. The mixture should be creamy and spreadable; add more milk in small splashes until it resembles a thick sauce.
- Prep the noodles: If not using oven-ready noodles, cook lasagna sheets in well-salted water until just shy of al dente. Drain and lay flat on a lightly oiled sheet to prevent sticking.
- Assemble the first layer: Spread a thin layer of the ricotta mixture over the bottom of the baking dish to prevent sticking. Lay down the first layer of noodles.
- Layer the fillings: Spread a generous layer of ricotta mixture over the noodles. Scatter a third of the roasted squash and a third of the kale on top. Sprinkle with mozzarella and a teaspoon or two of Parmesan.
- Repeat: Add another layer of noodles and repeat the ricotta, squash, kale, and cheese. Do this for 3 layers total, finishing with noodles on top.
- Top and moisten: Spread any remaining ricotta mixture over the top noodles. If it seems dry, drizzle 1/4–1/2 cup milk around the edges so the top layer stays tender. Finish with the remaining mozzarella and a light shower of Parmesan.
- Bake: Cover the dish with foil (tent it slightly so it doesn’t stick to the cheese). Bake at 375°F (190°C) for 25 minutes, then uncover and bake another 12–18 minutes, until bubbly and golden in spots.
- Rest: Let the lasagna rest 10–15 minutes before slicing. This helps it set and makes cleaner slices.
- Serve: Garnish with extra Parmesan or fresh thyme if you like. A simple green salad balances the richness.
