The Crisper Whisperer: Acorn Squash Lasagna with Béchamel Sauce Recipe

Name: The Crisper Whisperer: Acorn Squash Lasagna with Béchamel Sauce Recipe
Ingredients: 1 medium acorn squash; 1 cup whole-milk ricotta cheese; 4 Tablespoons butter; 1 medium onion, diced small; 6 cloves garlic, chopped; 3 Tablespoons chopped fresh sage; 1/4 cup all-purpose flour; 4 cups whole milk; 1/8 teaspoon grated nutmeg; 1/2 teaspoon salt; 1/4 teaspoon freshly ground black pepper; 1 1/2 cups freshly grated Parmigiano-Reggiano cheese, divided; 2 eggs; 15 no-boil lasagna noodles (from one box)