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Keto Cheeseburger Casserole


Keto Cheeseburger Casserole


Keto Cheeseburger Casserole

This easy keto cheeseburger casserole is hearty and filling and makes a wonderful low carb alternative to a cheeseburger.

Prep Time15 mins
Cook Time15 mins
Total Time30 mins
Course: Main Course
Cuisine: American
Keyword: beef, casserole, cheeseburger
Servings: 6 servings
Calories: 458 kcal


  • Olive oil spray for the baking dish
  • 2 tablespoons olive oil
  • 2 lb. extra lean ground beef
  • 1 medium onion finely chopped (6 oz)
  • 2 teaspoons Diamond Crystal kosher salt or 1 teaspoon fine salt
  • 1/4 teaspoon black pepper
  • 1 tablespoon minced garlic
  • 1/4 cup avocado oil mayonnaise
  • 1/4 cup unsweetened ketchup
  • 1 tablespoon mustard
  • 1 1/2 cup shredded sharp cheddar divided (6 oz)


  • Preheat oven to 400 degrees F. Spray a 2-quart baking dish with olive oil.
  • Heat the olive oil in a large skillet over medium-high heat, about 2 minutes. Add the beef and the onions. Cook, stirring to break up the beef, until the meat is browned and the onion is soft, about 5 minutes.
  • If there are liquids at the bottom of the skillet, drain the mixture and return it to the skillet.
  • Stir in the kosher salt, black pepper, and garlic. Cook, stirring, 1 more minute.
  • Turn the heat off. Stir in the mayonnaise, unsweetened ketchup, mustard, and 1 cup cheddar.
  • Transfer the mixture to the prepared baking dish. Sprinkle with the remaining cheese.
  • Bake until the cheese is melted and the casserole is heated through, about 15 minutes. Or, if your baking dish is broiler-safe, broil the casserole 6 inches below the heating element (not directly below) until cheese is melted, 1-2 minutes.

Nutrition Facts
Keto Cheeseburger Casserole
Amount Per Serving
Calories 458Calories from Fat 279
% Daily Value*
Fat 31g48%
Saturated Fat 7g44%
Sodium 771mg34%
Carbohydrates 4g1%
Sugar 2g2%
Protein 38g76%
* Percent Daily Values are based on a 2000 calorie diet.

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