Cheesy Ground Beef and Ricotta Shell Pasta Creamy ricotta, savory beef, and tender shell pasta baked under a melty cheese crust. Ingredients: 1 lb ground beef 1 small onion, diced 2 cups medium pasta shells 1 cup ricotta cheese 1 cup marinara or pasta sauce 1 egg 1/2 tsp garlic powder Salt and pepper to taste 1.5 cups shredded mozzarella cheese 1/2 cup grated Parmesan cheese Butter or cooking spray Instructions: Preheat oven to 375°F (190°C). Grease a 9x13-inch baking dish. Cook pasta: Boil shel