Preheat the oven to 350°F (175°C). Lightly grease a 9x13-inch baking dish.

In a large skillet over medium heat, cook ground beef and diced onion until the meat is browned and the onion is soft, about 7 to 8 minutes. Drain excess fat.

Stir in the minced garlic and cook for 30 seconds until fragrant.

In a separate bowl, whisk together cream of mushroom soup, milk or broth, paprika, salt, and pepper until smooth.

In the prepared baking dish, combine cooked rice, beef mixture, 1 cup of shredded cheese, and the sauce. Mix well to combine thoroughly.

Sprinkle the remaining 1 cup of cheese evenly on top. Cover with foil.

Bake covered for 20 minutes, then remove foil and bake an additional 10 minutes until cheese is bubbly and golden.

Optional: Broil for 2 minutes for a crispy cheese topping, watching carefully to prevent burning.

Let rest for 5 minutes, garnish with chopped parsley if desired, and serve hot.