Creating Cheesy Ground Beef & Rice Casserole is a straightforward process if you follow these simple steps:

1. Preheat Oven: Preheat your oven to 350°F (175°C).
2. Brown the Beef: In a large skillet, brown the ground beef over medium heat until fully cooked. Drain excess fat.
3. Add Aromatics: Add the diced onion and minced garlic to the skillet. Cook until the onion is translucent, about 3-4 minutes.
4. Combine Ingredients: In a large bowl, combine the cooked ground beef, rice, cream of mushroom soup, cream of chicken soup, beef broth, and seasonings (salt, pepper, paprika, garlic powder, onion powder). Stir until well mixed.
5. Add Vegetables: If using, fold in the frozen mixed vegetables until evenly distributed.
6. Transfer to Baking Dish: Pour the mixture into a greased 9×13-inch baking dish, spreading it out evenly.
7. Bake: Cover the dish with aluminum foil and bake in the preheated oven for 40-45 minutes.
8. Add Cheese: Remove the foil, sprinkle the shredded cheddar cheese over the top, and return to the oven for an additional 5-10 minutes, or until the cheese is melted and bubbly.
9. Cool: Once baked, remove the casserole from the oven and let it cool for about 5-10 minutes before serving.
10. Garnish: Optionally, sprinkle with fresh parsley for an added touch of color and flavor.

These steps will guide you in creating this incredible casserole effortlessly.