
This keto-friendly twist on the classic Big Mac delivers all the flavors you crave without the carb overload. Using low-carb tortillas as the base, these smash burgers create a crispy exterior while keeping the beef juicy and flavorful inside, topped with that iconic special sauce we all know and love.
I started making these during my first month of keto when the fast food cravings hit hard. Now my husband requests them weekly, claiming they taste even better than the drive-thru version.
Ingredients
- Ground beef: 80/20 blend provides the perfect fat content for juicy burgers that won't dry out
- Zero carb tortillas: Create the perfect crispy exterior and hold everything together beautifully
- American cheese slices: Melt perfectly and provide that authentic fast food flavor
- Shredded lettuce: Adds freshness and the classic Big Mac crunch
- Dill pickle slices: Bring tangy brightness that cuts through the richness
- Mayonnaise: Forms the creamy base for our special sauce
- Sugar free ketchup: Delivers sweetness without the carbs
- Yellow mustard: Provides that distinctive tang in the special sauce
- Paprika, garlic, and onion powder: Create depth of flavor in both the meat and sauce
Step-by-Step Instructions
- Prepare the meat mixture:
- Combine ground beef with garlic powder, salt, and pepper in a large bowl. Use your hands to gently mix the seasonings throughout, being careful not to overwork the meat which can make your burgers tough.
- Form the patties:
- Divide your seasoned meat into 8 equal portions and roll into balls. The key here is uniformity so each burger cooks evenly. I find using a kitchen scale helps achieve consistent sizing.
- Create the smash burgers:
- Take one meat ball and press it firmly onto the surface of a low carb tortilla, covering it completely from edge to edge. The meat should adhere to the tortilla creating a single unified patty. Repeat with remaining meat and tortillas.
- Cook with the smash technique:
- Place each tortilla meat side down in a preheated skillet. Use a heavy spatula or burger press to firmly smash the patty flat against the hot surface. This creates those delicious crispy edges that make smash burgers so irresistible. Cook for 3 to 4 minutes until deeply browned.
- Flip and finish cooking:
- Carefully flip each burger so the tortilla side is now touching the skillet. Immediately place a slice of American cheese on top of each patty. Cook for another 2 to 3 minutes until the tortilla becomes golden and crispy while the cheese melts beautifully.
- Make the special sauce:
- While the burgers cook, combine all sauce ingredients in a small bowl, whisking until smooth and well incorporated. This sauce can be made ahead and stored in the refrigerator to develop even more flavor.
- Assemble your burgers:
- Spread a generous amount of the special sauce over each cooked burger. Top with shredded lettuce and pickle slices. For the authentic experience, arrange pickles in the classic Big Mac pattern.

The secret to making these burgers truly special is taking time with the sauce. I always make a double batch and let it sit in the refrigerator for at least an hour before serving. The flavors meld together and create that nostalgic Big Mac taste that keeps my family coming back for more.
Make Ahead Options
These keto smash burgers are excellent candidates for meal prep. You can prepare the meat mixture and form the patties up to 24 hours in advance, keeping them separated with parchment paper in an airtight container in the refrigerator. The special sauce actually improves with time, developing deeper flavor when made a day ahead. For busy weeknights, you can even cook the burgers completely, cool them, and refrigerate for up to three days. Simply reheat in a skillet or air fryer for a few minutes to restore the crispy texture.
Substitution Ideas
While this recipe stays true to the classic Big Mac experience, there are several ways to customize it based on dietary needs or ingredient availability. For dairy-free options, substitute the American cheese with your favorite plant-based cheese slices. If you prefer a different protein, ground turkey or chicken works well but may need additional seasonings and fat to remain juicy. No zero-carb tortillas available? Try making cheese crisps as the base by melting circles of cheese until firm, then building your burgers on these crispy rounds for an even lower-carb option.
Serving Suggestions
These keto smash burgers pair beautifully with simple sides that maintain the low-carb profile of your meal. Air-fried radishes make an excellent French fry substitute, especially when tossed with garlic powder and parmesan after cooking. A simple side salad with a high-fat dressing complements the burgers perfectly. For a complete fast-food experience, serve with a keto-friendly milkshake made with unsweetened almond milk, heavy cream, and sugar-free sweetener blended with ice and a few berries.

These keto smash burgers are a delicious, easy way to satisfy cravings while staying on track with your diet. Try them today and enjoy a fun, nostalgic meal at home!
Frequently Asked Questions
- → Can I substitute the zero-carb tortillas with something else?
Yes, you can use other low-carb alternatives like cheese wraps, lettuce wraps, or keto-friendly bread. However, the zero-carb tortillas create a unique texture that mimics a traditional bun when cooked with the beef patty.
- → How do I store leftover Big Mac sauce?
Store any leftover sauce in an airtight container in the refrigerator for up to 1 week. The flavors actually develop better after a day, making it perfect for meal prep.
- → What can I substitute for American cheese?
While American cheese provides the classic melt and flavor, you can substitute with cheddar, pepper jack, or any other keto-friendly cheese that melts well. Just be aware that harder cheeses may not melt as smoothly.
- → Why smash the burger onto the tortilla?
This technique creates a bond between the meat and tortilla, making it easier to eat as a handheld meal. It also allows the tortilla to crisp up while absorbing some of the burger's flavor and juices.
- → Can I make these burgers ahead of time?
These burgers are best enjoyed fresh off the skillet when the tortilla is crisp and the cheese is melted. If needed, you can prepare the meat mixture and sauce ahead of time, then assemble and cook the burgers just before serving.
- → Is this dish truly keto-friendly?
Yes, using zero-carb tortillas and sugar-free condiments keeps the carb count very low, making this suitable for a ketogenic diet. Always check the nutrition information on your specific brands of ingredients to confirm.