Pizza Spaghetti Casserole

Pizza Spaghetti Casserole 24 oz pasta sauce 12 oz spaghetti, broken into thirds 2 cups Italian cheese blend, grated 3/4 pound ground Italian sausage 8 oz mushrooms, sliced 1/4 cup parmesan cheese, grated 4 oz pepperoni slices 1 tablespoon olive oil Preheat oven to 350°F and lightly grease a 3-quart casserole dish. Bring a large pot of salted water to a boil and cook spaghetti according to package instructions. Drain and place spaghetti in prepared casserole dish. In a large pan over medium-high heat, heat oil, then sausage, stirring until brown and cooked through, 5-7 minutes. Remove sausage from pan and arrange over spaghetti. Add mushrooms to pan and cook until browned, about 5 minutes. Top spaghetti and sausage with the sauce, mushrooms, and then the cheeses and pepperoni. Bake until bubbly and cheese has melted, 15-20 minutes