Creating Ground Beef Casserole can be a fun and straightforward process. Just follow these simple steps:

1. Preheat the Oven: Set your oven to 375°F (190°C) and grease a 9×13 inch casserole dish.
2. Cook the Ground Beef: In a large skillet over medium heat, brown the ground beef until fully cooked. Drain excess fat.
3. Add Onions and Garlic: Stir in the diced onion and minced garlic. Sauté until tender, about 3-4 minutes.
4. Incorporate the Vegetables: Add the drained diced tomatoes and frozen mixed vegetables to the skillet. Stir to combine.
5. Mix in Pasta and Liquids: Stir in the uncooked pasta, beef broth, Worcestershire sauce, oregano, salt, and black pepper. Bring the mixture to a boil.
6. Transfer to Casserole Dish: Pour the mixture into the greased casserole dish, spreading it evenly.
7. Add Cheese: Top the mixture with shredded cheese, ensuring complete coverage.
8. Bake: Cover the dish with foil and bake in the preheated oven for 25 minutes. Then, remove the foil and bake for an additional 15-20 minutes, or until the cheese is bubbly and golden.
9. Cool Slightly: Remove from the oven and let it cool for about 5-10 minutes before serving.
10. Garnish and Serve: Optionally, sprinkle with fresh parsley for a finishing touch.

These steps will guide you in creating this amazing Ground Beef Casserole effortlessly.