Cheeseburger Casserole

This easy keto cheeseburger casserole is hearty and filling and makes a wonderful low carb alternative to a cheeseburger. You won’t miss the bun!

This keto cheeseburger casserole is delicious, in a delightfully non-gourmet sort of way. Grownups and kids alike always enjoy it. And the younger one – the Picky Eater- often asks for seconds!

The ingredients you’ll need

You’ll only need a few simple ingredients to make this tasty recipe. The exact measurements are included in the recipe card below. Here’s an overview of what you’ll need:

1. Olive oil
2. Extra-lean ground beef
3. Onion and garlic
4. Kosher salt and black pepper
5. Mayonnaise
6. Unsweetened ketchup
7. Mustard
8. Shredded cheddar

How to make keto cheeseburger casserole

This casserole is a wonderful option if you follow a keto or a low carb diet. You get all the wonderful flavors of a cheeseburger, without the soggy, spongy bun. Really, who needs a bun anyway? 😉

Scroll down to the recipe card for the detailed instructions. The basic steps are super easy:

1. Start by cooking the beef and onion in olive oil.
2. Add the garlic, salt, and black pepper.
3. Off heat, stir in the mayo, ketchup, mustard, and half the cheese.
4. Transfer to a greased baking dish and sprinkle with the remaining cheese.
5. Bake about 15 minutes at 400°F.

What beef to use in keto cheeseburger casserole

I use extra lean ground beef (93% lean). I’ve got nothing against lean ground beef (85% lean), but when I cook it for a casserole I end up draining the fat anyway. So it makes more sense to use leaner meat that doesn’t require much draining.

But is this healthy? So much meat and cheese!

I believe it is. Some experts advise us to limit red meat. But fresh unprocessed meat is very nutritious and I do believe it has a place in a healthy diet, in moderation. Especially when accompanied by vegetables.

As for the cheese, unless you have a specific issue that requires you to limit saturated fat, current research says that full-fat dairy is not harmful and might even be beneficial.

Take a look at the nutrition info for a serving of this recipe. I think it’s quite impressive!

You can add veggies for a complete meal

I really like casseroles. They’re just so EASY. You place a few ingredients in the casserole dish, place it in the oven, and 30-60 minutes later, dinner is ready!

If you’d like to turn this casserole into a complete meal, you can add 1-2 cups of uncooked riced cauliflower to the meat and onion and cook everything together. You might need to increase the olive oil a little if you do.

How to serve this keto cheeseburger casserole

To balance out the richness of this dish, I definitely recommend skipping the starches and serving it with a side veggie, such as simple steamed green beans, roasted asparagus or a green salad.

What about leftovers?

You can keep leftovers of this keto cheeseburger casserole in the fridge, in an airtight container, for 3-4 days. Reheat them gently, in the microwave, on 50% power.

More ground beef recipes that you might enjoy

I have several that I really like. You should definitely try this very flavorful ground beef meat pie! And these baked hamburgers are the easiest recipe I have ever found to make burgers.

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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: 458kcal

Author: Vered DeLeeuw

INGREDIENTS

• 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 coarse kosher salt (not fine salt)
• 1/4 teaspoon black pepper
• 1 tablespoon minced garlic
• 1/4 cup avocado oil mayonnaise
• 1/4 cup unsweetened ketchup
• 1 tablepsoon mustard
• 1 1/2 cup shredded sharp cheddar, divided (6 oz)

INSTRUCTIONS

• 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. 

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NUTRITION INFO
Nutrition info is approximate. It is calculated using the ketodeliciousdiet.com recipe calculator, and the carb count excludes sugar alcohols. Please read the disclaimers in our Terms of Use carefully before using any of our recipes. Recommended and linked products are not guaranteed to be gluten-free. Please verify they are before using.

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.