Creating this delicious casserole is as simple as it is rewarding. Here’s how to bring it all together:

1. Preheat your oven to 350°F (175°C).
2. In a large skillet, cook the ground beef over medium heat until browned. Drain any excess fat.
3. Add the chopped onion and minced garlic to the skillet, cooking until the onion is translucent and the garlic is fragrant.
4. Stir in the tomato sauce, diced tomatoes, and Worcestershire sauce. Season with salt and pepper to taste. Let the mixture simmer for about 10 minutes, allowing the flavors to meld.
5. Meanwhile, cook the pasta shells according to package instructions until al dente. Drain and set aside.
6. Combine the cooked pasta with the beef mixture, stirring well to ensure the pasta is evenly coated.
7. Transfer the mixture to a greased 9×13 inch baking dish. Sprinkle the shredded cheddar cheese generously over the top.
8. Bake in the preheated oven for 20-25 minutes, or until the cheese is melted and bubbly.
9. Garnish with fresh parsley before serving, if desired.

This step-by-step process is reminiscent of the way my mother used to guide me through recipes, with patience and a focus on bringing out the best in each ingredient.