In a skillet, cook bacon until crispy. Remove, crumble, and set aside.

Drain most of the bacon grease, leaving about 1 tbsp. Add ground beef, onion, and garlic. Cook until beef is browned and onion is soft. Stir in smoked paprika, garlic powder, salt, and pepper.

Lower heat, stir in softened cream cheese until melted into the beef mixture. Add crumbled bacon back in. Spread this mixture evenly into a greased 9x13-inch baking dish.

In a bowl, whisk together eggs, heavy cream, mustard, and ketchup (if using). Stir in half the cheddar and half the mozzarella.

Pour egg mixture over the beef layer in the baking dish. Top with remaining cheeses.

Place in a preheated oven at 350°F (175°C) for 25–30 minutes, or until the center is set and the top is golden.

Let cool slightly before slicing. Garnish with pickles or parsley if desired.