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It’s a delicious and healthier version of a classic cheeseburger

It’s easy to make and only takes 30 minutes

It’s keto-friendly and low-carb

It’s packed with savory flavors from the ground beef, onions, and shredded cheddar cheese

It’s a crowd-pleaser that will satisfy everyone’s cheeseburger cravings


907 g (2 lbs.) extra-lean ground beef

2 tsp coarse kosher salt

¼ cup avocado oil mayonnaise

¼ tsp black pepper

1 tbsp. minced garlic

Olive oil spray for the baking dish

¼ cup unsweetened ketchup

1 medium onion finely chopped (about 170 g or 6 oz.)

1 ½ cups shredded sharp cheddar divided (about 170 g or 6 oz.)

30 ml (2 tbsp.) olive oil

1 tbsp. mustard


Preheat oven to 400°F. Spray a 2-quart baking dish with olive oil.

Heat the olive oil in a large skillet over medium-high heat for 2 minutes. Add onions and beef.

Cook, stirring to break up the beef, until the beef is browned and the onion is tender for 5 minutes. When there are fluids in the bottom of the skillet, then drain the mix and then return it to the skillet.

Stir in the black pepper, garlic, and kosher salt. Cook, stirring for a few minutes.

Turn off the heat. Stir in the unsweetened ketchup, mayonnaise, 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, for 15 minutes.


Or, if your baking dish is broiler-safe, broil the casserole 6-inches below the heating element (not straight under) till cheese is melted, for 1-2 minutes.


For a spicier version, add a pinch of cayenne pepper or red pepper flakes.

To make it even more keto-friendly, you can use a homemade or low-carb ketchup.

Leftovers can be stored in the refrigerator for up to 3 days, or in the freezer for up to 3 months.

In conclusion, this Keto Cheeseburger Casserole is a delicious and satisfying low-carb meal that will please the whole family. It’s easy to make, packed with flavor, and perfect for a busy weeknight dinner. The combination of ground beef, onions, cheese, and savory condiments creates a classic cheeseburger taste that’s hard to resist. Plus, it’s keto-friendly, gluten-free, and can be customized to your liking. Whether you’re following a ketogenic diet or just looking for a tasty and healthy meal, this recipe is a must-try. So give it a go and enjoy a warm and comforting casserole that’s sure to become a new favorite!


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