Creating this Mac and Cheese Meatloaf Casserole is straightforward if you follow these easy steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Cook Pasta: Boil the elbow macaroni according to the package instructions until al dente. Drain and set aside.
3. Prepare Ground Beef Mixture: In a large bowl, combine the ground beef, chopped onion, minced garlic, Worcestershire sauce, mustard, salt, pepper, and paprika. Mix until thoroughly combined.
4. Integrate Bread Crumbs: Add the bread crumbs to the ground beef mixture and combine well.
5. Form the Meatloaf: In a greased 9×13-inch casserole dish, form half of the meat mixture into a loaf shape at the bottom of the dish.
6. Layer Mac and Cheese: In a separate bowl, mix the cooked macaroni with 1 cup of shredded cheese and the milk. Pour the mac and cheese over the meatloaf layer.
7. Top with Remaining Meat: Layer the rest of the meat mixture on top of the mac and cheese, pressing down gently.
8. Add Additional Toppings: If desired, spread the crushed tomatoes on top and sprinkle the remaining cheese for a gooey finish.
9. Bake: Place the casserole in the preheated oven and bake for 45-50 minutes until the meat is fully cooked and the cheese is bubbly.
10. Cool: Once baked, remove from the oven and let it cool for 10-15 minutes before slicing.

These straightforward steps will help you create an incredible Mac and Cheese Meatloaf Casserole that dazzles the taste buds and fills the belly!