Lasagna Casserole Recipe

Name: Lasagna Casserole Recipe
Ingredients: Meat sauce:; 1 lb ground italian sausage; 1 onion, diced; 4 cloves garlic; 1 yellow squash, diced; 1 roasted red pepper, diced; 1 rib celery, diced; 1/2 cup red wine; 28 ounces crushed tomatoes; 2 tablespoons tomato paste; 14 ounces petite diced tomatoes; 2 tsp dried basil; 1/2 tsp dried oregano; 1/2 tsp crushed red pepper flakes; 1 tsp sugar; Salt and pepper to taste; Ricotta mixture:; 2 cup ricotta; 1 egg; 1/4 cup parmesan; 10 ounces fresh spinach, chopped; 8 oz black olives, sliced; Pinch of fresh ground nutmeg; Other ingredients:; 1 – 2 boxes lasagna pasta, (i used no boil for the ease); 6 ounces mozzarella cheese, grated; 6 ounces cheddar, grated (optional)