Creating the Cheesy Beef and Rice Casserole is straightforward when you follow these steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Cook the Beef: In a large skillet over medium heat, brown the ground beef. Drain excess fat.
3. Sauté Vegetables: Add diced onion and minced garlic to the skillet. Sauté until the onion is translucent.
4. Mix Ingredients: In a large bowl, combine the cooked beef, rice, beef broth, cream of mushroom soup, milk, salt, pepper, paprika, and frozen vegetables. Mix well.
5. Transfer to Casserole Dish: Pour the mixture into a greased 9×13-inch casserole dish.
6. Add Cheese: Sprinkle the shredded cheddar cheese evenly over the top.
7. Bake: Cover the dish with aluminum foil and bake for 30 minutes. Remove the foil and bake for an additional 10-15 minutes, until the cheese is bubbly and golden.
8. Cool: Remove from the oven and let it cool for 5-10 minutes before serving.
9. Garnish: If desired, sprinkle fresh parsley on top for a pop of color.

These steps will guide you in creating this incredible casserole with ease.