- Preheat oven to 350 degrees F (175 degrees C). Grease a 9×13-inch baking dish.
- Cook and stir ground beef, onion, garlic powder, salt, and black pepper in a skillet over medium heat until beef is browned and crumbly, 7 to 10 minutes. Spread beef into the bottom of the prepared baking dish.
- Stir cream of mushroom soup, potato nuggets, and Cheddar cheese together in a large bowl until potato nuggets are evenly coated in soup and cheese. Spread potato nugget mixture over beef mixture.
- Bake in the preheated oven until browned, about 45 minutes. Sprinkle paprika and parsley flakes over the top.