How To Make Low-Carb Bacon Cheeseburger Casserole:

1. Preheat the oven to 350 degrees F (175 degrees C).
2. Heat a large skillet over medium-high heat. Cook and stir beef with garlic and onion powder until browned and crumbly, 5 to 7 minutes. Drain and discard grease.
3. Spread beef onto the bottom of a 9×13-inch casserole pan. Stir in bacon pieces.
4. Whisk eggs, heavy cream, salt, and pepper in a medium bowl until well combined. Stir in 8 ounces Cheddar cheese.
5. Pour egg mixture over the beef and bacon. Top with the remaining 4 ounces cheese.
6. Bake in the preheated oven until golden brown on top, 30 to 35 minutes.