Butternut Squash and Spinach Lasagna

Ingredients

• 1 stick Butter
• 1 cup All-Purpose flour
• 3 cups Milk
• 3/4 cup Parmesan cheese
• 2 Onions
• 2 1/2 Ibs Butternut squash
• as needed Sage
• 4 cloves Garlic
• 1 Ibs Spinach
• 1/4 tsp. Nutmeg
• as needed Salt and Pepper
• as needed Olive oil
• as needed Lasagna sheets
• 4 oz. Mozzarella
• 1/2 cup Parmesan cheese