Cheeseburger and fries casserole tops seasoned ground beef and cheese with crispy fries for a fun family dinner that kids love. This protein-packed, playful twist on a burger is a guaranteed hit.
Preheat oven to 400°F. Lightly grease a 9x13 inch casserole dish.
In a large skillet over medium-high heat, cook ground beef for 5-6 minutes, breaking it up and stirring occasionally, until browned and cooked through. Drain excess grease.
Add diced onion to the skillet; sauté with the beef for 3 minutes until softened. Stir in ketchup, mustard, Worcestershire, salt, black pepper, and garlic powder, and simmer for 2 minutes to combine flavors.
Spread the beef mixture evenly in the bottom of the prepared casserole dish. Sprinkle shredded cheddar cheese over the beef layer.
Arrange frozen French fries in a single, even layer over the cheese. Bake uncovered for 35-40 minutes or until fries are crisp and golden, rotating the dish halfway through for even browning.
Optional: Broil the casserole for 2 minutes at the end for extra crisp fries. Let rest for 5 minutes before serving.