Low Carb Bacon Cheeseburger Casserole With Cheesy Layers and Bacon

Ingredients

• 10 slices bacon, chopped
• 2 lb (900 g) ground beef, 85 percent lean
• 1 small yellow onion, finely chopped
• 3 cloves garlic, minced
• 1 teaspoon kosher salt
• 1/2 teaspoon black pepper
• 1/2 teaspoon onion powder
• 4 oz (115 g) cream cheese, softened
• 7 large eggs
• 3/4 cup (180 ml) heavy cream
• 2 tablespoons yellow mustard
• 2 tablespoons sugar-free ketchup
• 8 oz (225 g) sharp cheddar cheese, freshly shredded and divided
• 4 oz (115 g) shredded mozzarella cheese
• 1/2 cup chopped dill pickles
• 2 tablespoons sliced green onions
• Extra mustard or sugar-free ketchup, optional