Creating your Cheesy Hamburger Casserole is easy! Follow these simple steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Cook the Beef: In a large skillet over medium heat, add the ground beef. Cook until browned, breaking it apart as it cooks, about 5-7 minutes.
3. Add Onions and Garlic: Add the chopped onion and minced garlic to the skillet. Sauté until the onion becomes translucent, about 3-4 minutes.
4. Season: Stir in the Worcestershire sauce, salt, and pepper. Mix well.
5. Combine Ingredients: In a large mixing bowl, combine the uncooked macaroni, cheddar cheese soup, milk, and half of the shredded cheddar cheese. Mix until smooth.
6. Mix in Beef: Add the cooked beef mixture to the bowl and stir until evenly combined.
7. Transfer to Casserole Dish: Pour the mixture into a greased 9×13 inch casserole dish, spreading it evenly.
8. Top with Cheese: Sprinkle the remaining shredded cheddar cheese on top.
9. Bake: Place the casserole in the preheated oven. Bake for 30-35 minutes, or until bubbly and golden brown.
10. Cool: Once done, remove the casserole from the oven and let it sit for 5-10 minutes.
11. Garnish (optional): If desired, sprinkle with halved cherry tomatoes and chopped parsley before serving.

These straightforward steps will guide you in making a mouthwatering Cheesy Hamburger Casserole effortlessly!