Ingredients:
- 2 cans (29 oz / 828g) pumpkin puree
- 2 tbsp (28g) unsalted butter
- 1 tbsp (6g) fresh sage, finely chopped
- 2 cloves (6g) garlic, minced
- 1/4 tsp (0.5g) ground nutmeg
- 1/2 tsp (3g) salt
- 1/4 tsp (1g) black pepper
- 4 tbsp (56g) unsalted butter
- 1/4 cup (30g) all-purpose flour
- 3 cups (710ml) whole milk, warmed
- 1/2 cup (50g) grated Parmesan cheese
- 1/4 tsp (1g) salt
- 15 oz (425g) ricotta cheese
- 1 large (50g) egg, lightly beaten
- 10 oz (283g) frozen spinach, thawed and squeezed dry
- 3 cups (340g) shredded mozzarella cheese
- 1/2 cup (50g) grated Parmesan cheese
- 12 lasagna noodles (300g)
Instructions:
- Melt 2 tbsp butter in a saucepan over medium heat. Add minced garlic and chopped sage, sautéing for 2 minutes until the sage smells nutty and fragrant.
- Stir in the pumpkin puree, nutmeg, salt, and pepper. Simmer on low for 8–10 minutes, stirring frequently, until the mixture thickens and looks jammy. Set aside.
- In a clean saucepan, melt 4 tbsp butter over medium heat. Whisk in the flour and cook for 1–2 minutes to remove the raw flour taste.
- Slowly pour in warmed milk, whisking constantly to prevent lumps. Continue cooking and whisking until the sauce thickens enough to coat the back of a spoon.
- Stir in 1/2 cup Parmesan cheese and 1/4 tsp salt; remove from heat.
- In a medium bowl, combine the ricotta cheese, beaten egg, squeezed-dry spinach, and the remaining 1/2 cup of Parmesan. Stir until well combined.
- Assemble the lasagna by layering the pumpkin base, lasagna noodles, ricotta mixture, white sauce, and mozzarella cheese. Repeat layers until all ingredients are used, finishing with a generous topping of mozzarella.
- Cover with aluminum foil and bake in a preheated oven at 375°F (190°C) for 25 minutes, then uncover and bake for an additional 20 minutes until the cheese is golden and bubbly.