Creating the Mac and Cheese Meatloaf Casserole is straightforward when you follow these simple steps:

1. Preheat your oven to 350°F (175°C) and grease a 9×13-inch baking dish.

2. In a large mixing bowl, combine the ground beef, breadcrumbs, milk, egg, onion powder, garlic powder, Worcestershire sauce, salt, and pepper. Mix until well combined.

3. Take half of the meat mixture and spread it evenly in the bottom of the greased baking dish to form the first layer.

4. In another bowl, mix the cooked macaroni with 1 cup of shredded cheddar cheese. If desired, add marinara sauce for added flavor.

5. Spread the mac and cheese mixture evenly over the meat layer.

6. Top the mac and cheese layer with the remaining meat mixture, spreading it out gently.

7. Sprinkle additional shredded cheese on top, if desired.

8. Bake in the preheated oven for 30-40 minutes, or until the meat is cooked through and the top is golden brown.

9. Allow the casserole to rest for about 10 minutes before slicing and serving.

By carefully following these steps, you’ll create a dish that combines flavors and textures to produce an incredibly comforting meal.