Zucchini And Squash Ricotta Pasta Casserole

Name: Zucchini And Squash Ricotta Pasta Casserole
Total time: 40 min
Yield: 8 servings
Ingredients: 2 tablespoons olive oil; 1 onion medium, about ½ cup; 2 cloves garlic minced; 1 teaspoon crushed red pepper flakes; 2 tablespoons all purpose flour; 2 cups milk; 1/2 cup ricotta cheese; 2 tablespoons butter; 1/4 teaspoon grated nutmeg freshly; 1/2 teaspoon salt; 1/2 teaspoon pepper; 12 ounces pasta cooked according to package directions; 1 1/2 cups yellow squash diced; 1 1/2 cups zucchini squash diced; 1 1/2 cups butternut squash diced