Cheesy Baked Spaghetti Casserole 🍝🧀🥩 Ingredients 1 lb spaghetti 1 tbsp olive oil 1 lb ground beef 1 medium onion 2 cloves garlic 1 (24 oz) jar spaghetti sauce 1 (15 oz) can tomato sauce 1 tsp Italian seasoning 1 cup ricotta cheese 1 large egg 1/4 cup grated Parmesan cheese 3 cups shredded mozzarella cheese Serves: 6–8 Dish Size: 9 × 13 inch baking dish How to Make: Preheat your oven to 375°F (190°C). Cook the spaghetti in salted water until al dente, then drain and toss it with the olive oil