Preheat the oven to 375°F.
In a large skillet, cook the ground beef over medium heat until browned. Drain any excess grease from the skillet.
Add the diced onion and minced garlic to the skillet with the ground beef. Cook for a few minutes until the onion becomes translucent.
Stir in the dried mustard, paprika, salt, and black pepper. Mix well to coat the beef and onion mixture with the spices.
Add the sugar-free ketchup and yellow mustard to the skillet. Stir to combine and let the mixture simmer for a few minutes.
Transfer the beef mixture to a greased 9×9-inch casserole dish.
Sprinkle the crumbled bacon evenly over the beef mixture.
Spread the shredded cheddar cheese over the top of the bacon and beef mixture.
In a separate bowl, whisk together the eggs and heavy cream until well combined.
Pour the egg and cream mixture over the casserole, making sure it covers the entire surface.
Place the casserole dish in the preheated oven and bake for about 25-30 minutes or until the top is golden brown and the eggs are set.
Once cooked, remove the casserole from the oven and let it cool for a few minutes.
Garnish with freshly chopped parsley before serving.
Enjoy the delicious Low Carb Bacon Cheeseburger Casserole!
