Keto Cheeseburger Casserole

Ingredients

• 1 teaspoon butter , or as needed
• 1 pound ground beef
• 0.5 cups diced onion
• 2 cloves garlic cloves , pressed
• salt and freshly ground black pepper to taste
• 1 cup shredded sharp Cheddar cheese , divided
• 2 tablespoons ketchup
• 2 tablespoons mayonnaise
• 2 tablespoons diced dill pickles
• 0.5 tablespoons mustard

Instructions

1. 1

   Preheat the oven to 400 degrees F (200 degrees C). Grease a baking dish with butter.

2. 2

   Cook ground beef and onion in a large, nonstick skillet over medium heat until beef is browned and onions are soft and translucent, 5 to 10 minutes. Add garlic and cook until fragrant, about 1 minute. Season with salt and pepper. Stir in 1/2 cup Cheddar cheese until well combined.

3. 3

   Remove from heat. Add ketchup, mayonnaise, pickles, and mustard. Transfer mixture to buttered baking dish and top with remaining 1/2 cup Cheddar cheese.

4. 4

   Bake in the preheated oven until cheese is melted, 7 to 10 minutes.