To create your Low-Carb Bacon Cheeseburger Casserole, follow these simple steps:

1. Preheat the Oven: Preheat your oven to 350°F (175°C).
2. Cook the Bacon: In a large skillet, cook the bacon over medium heat until crispy. Remove and drain on paper towels. Once cooled, crumble it into pieces.
3. Sauté the Onions: In the same skillet, using the bacon drippings, sauté the diced onion until translucent.
4. Brown the Beef: Add the ground beef to the skillet and cook until browned. Drain excess grease if necessary.
5. Combine Ingredients: In a large bowl, whisk together the eggs, heavy cream, mustard, garlic powder, salt, pepper, and paprika.
6. Layer the Casserole: In a greased baking dish, layer the browned beef mixture, crumbled bacon, and half of the cheddar cheese.
7. Pour the Egg Mixture: Pour the egg mixture evenly over the beef and bacon layers.
8. Top with Cheese: Sprinkle the remaining cheddar cheese over the top.
9. Bake: Place the casserole in the preheated oven and bake for 30-35 minutes or until set and golden brown on top.
10. Cool and Serve: Let the casserole cool for a few minutes before serving, allowing the flavors to meld.

By following these straightforward steps, you’ll create a delicious Low-Carb Bacon Cheeseburger Casserole that everyone will love.