This Keto Big Mac Casserole has all the delicious flavors of a Big Mac without all the carbs. Juicy ground beef, homemade burger sauce, melty cheese, pickles, onions, and sesame seeds. Not only is it quick and easy to make, with less than 30 minutes of cook time, but it is also kid-friendly.
Ingredients in Keto Big Mac Casserole
Ingredient Notes
How to make Low Carb Big Mac Casserole
Step by Step Directions
STEP 1: Preheat oven to 350°F. In a large skillet over medium heat, brown the ground beef, minced onion flakes, garlic, Worcestershire sauce, sea salt and black pepper. Drain excess grease and transfer to a large casserole dish.
STEP 2: To the ground beef, add 1 cup sharp cheddar cheese, mozzarella cheese, and ¾ cup burger sauce. Mix until all ingredients are well combined.
STEP 3: Flatten down into a nice and even, compact layer. Top with pickle slices.
STEP 4: Sprinkle the remaining cup of sharp cheddar cheese over top. Sprinkle the sesame seeds on top of the cheese.
STEP 5: Bake for 20 minutes. Turn the oven up to a high broil and bake for another 5 minutes.
STEP 6: Top the Big Mac casserole with remaining burger sauce and serve!
Recipe Tips and Variations
Frequently Asked Questions
While many recipes will call for French dressing, or even just using Thousand Island dressing, Big Mac sauce is actually neither of those. It is a blend of mayo, ketchup, mustard, sweet pickle relish, vinegar, and other spices and seasonings. For this recipe I use my own homemade burger sauce recipe.
You can pile this casserole on top of shredded lettuce to make a delicious Big Mac salad. Alternatively, you can try my Bacon Cheeseburger Salad Recipe.
More low carb ground beef recipes
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Keto Big Mac Casserole
- Total Time: 35 minutes
- Yield: Makes 6 Servings 1x
- Diet: Gluten Free
Description
This Keto Big Mac Casserole has all the delicious flavors of a Big Mac without all the carbs. Juicy ground beef, homemade burger sauce, melty cheese, pickles, onions, and sesame seeds. Not only is it quick and easy to make, with less than 30 minutes of cook time, but it is also kid-friendly.
Ingredients
- 2 pounds ground beef (I get all my meat here)
- 2 tablespoons dried minced onions
- 1 tablespoon Worcestershire sauce
- 2 cloves garlic, minced
- sea salt and black pepper, to taste
- 2 cups shredded sharp cheddar cheese, divided
- 1 cup shredded mozzarella cheese
- 1 cup Burger Sauce, divided (get the recipe here)
- 1 cup dill pickle slices, about 20
- 2 tablespoons toasted sesame seeds
- 1 large head of romaine lettuce, chopped, optional
Instructions
- Preheat oven to 350°F
- In a large skillet over medium heat, brown the ground beef, minced onion flakes, garlic, Worcestershire sauce, sea salt and black pepper. Drain excess grease and transfer to a large casserole dish.
- To the ground beef, add 1 cup sharp cheddar cheese, mozzarella cheese, and ¾ cup burger sauce. Mix until all ingredients are well combined. Flatten down into a nice and even, compact layer. Top with pickle slices.
- Sprinkle the remaining cup of sharp cheddar cheese over top. Sprinkle the sesame seeds on top of the cheese.
- Bake for 20 minutes. Turn the oven up to a high broil and bake for another 5 minutes.
- Plate each serving on top of a bed of shredded lettuce and top with remaining burger sauce.
Notes
- net carbs per serving: 5.8g
- Storage: Store the leftover keto Big Mac casserole in the refrigerator for up to 5 days.
- Reheating: Reheat the leftover Big Mac casserole in the microwave or in a pan on the stovetop.
- Prep Time: 15 Minutes
- Cook Time: 20 Minutes
- Category: Casserole recipes
- Method: Baking
- Cuisine: American
Nutrition
- Calories: 556
- Fat: 51g
- Carbohydrates: 8.8g
- Fiber: 3g
- Protein: 45g
Keywords: keto fast food, low carb casserole, big mac casserole, keto comfort food, gluten free fast food, fast food copycat recipe
Heidi says
Love this recipe!!! So easy and delicious
Sabrina Z says
Super tasty. I added extra cheese!
★★★★★
Penny says
A friend of mine recommended this recipe and said it was amazing. Boy was she right! I’ve even made it for other family members who love it just as much.
★★★★★
Jessika says
Oh my goodness! Had planned on leftovers for lunch...nope my family ate it all! Will definitely be buying your cookbooks for more like this! Tomorrow is the corned beef salad to double up on that terrific Russian dressing!!!!
Susan says
This was terrific, taste just like a Big Mac. This is a keeper!
Ann says
My guests kinda looked at me weird as I prepped this casserole (dressing, pickles) but I knew it’d be great. And when it came out of the oven all browned and bubbling, smelling fantastic—they were quickly believers!! Thanks for such a great, easy, fun and tasty recipe!
★★★★★
Karen says
Made this last night! It seriously tasted just like a Reuben sandwich! It's the caraway seeds - they give you that rye bread taste! It was awesome. I just heated up the mixed up corned beef, swiss and sauerkraut for a couple of minutes in the microwave to get the cheese all melty. Definitely going to make this again and keep it on regular rotation! Thanks, Kyndra!
★★★★★
Karen says
Oops, I meant to leave that comment on your Reuben salad recipe!
Last night I made the big mac casserole, and I really can't believe you were able to recreate the taste of a big mac, bun and all, without the bun! It was fantastic. After these 2 successes in a row, I'm going to buy your cookbook! Keep these delish recipes coming!
Lanée Johnson says
Absolutely AMAZING!! A hit with the whole family, picky kids included!
★★★★★
Cheryl K says
Very Tasty, tastes more like a cheeseburger than a Big Mac but still great. Kids loved it too and that means a lot!
★★★★★
Gail says
Is a serving size 1 cup?
Kyndra Holley says
To get the serving size, you'll just divide what's in your casserole dish into 6. It should yield a bit less than a cup.