Creating this scrumptious French Onion Ground Beef and Rice Casserole is straightforward with these detailed steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Cook Onions: In a large skillet, heat olive oil over medium heat. Add the sliced onions and sauté until they are golden brown and caramelized, about 10-15 minutes. Stir occasionally to prevent burning.
3. Brown Ground Beef: Add the ground beef to the skillet with the onions. Cook until the beef is browned, breaking it apart with a spatula. Sprinkle in garlic powder, onion powder, salt, and black pepper while cooking.
4. Combine Ingredients: Once the beef is cooked, stir in the cooked rice, Worcestershire sauce, and beef broth. Mix everything until well combined.
5. Transfer to Baking Dish: Pour the beef and rice mixture into a greased 9×13 inch baking dish, spreading it evenly.
6. Add Cheese: Evenly sprinkle shredded cheese over the top of the casserole.
7. Bake: Place the dish in the preheated oven and bake for 30-35 minutes, or until the cheese is bubbly and golden.
8. Garnish: Remove the casserole from the oven and let it cool slightly. Garnish with freshly chopped parsley before serving.

This recipe yields a delicious casserole that will undoubtedly become a favorite in your household!