A chaffle is a cheese-and-egg waffle used as a bun replacement. This Keto Big Mac Chaffle recreates the classic Big Mac flavor in a low-carb, gluten-free form with all the signature sauce, pickles, and layers.
Yield
1 large burger (2 chaffles = 1 burger)
Ingredients
For the Chaffle “Buns”
1 cup shredded mozzarella cheese
1 large egg
1 tbsp almond flour (optional for structure)
½ tsp garlic powder
½ tsp onion powder
Pinch of salt
For the Beef Patties
½ lb (225 g) ground beef (80/20 preferred)
Salt & pepper to taste
¼ tsp garlic powder
Keto Big Mac Sauce
¼ cup mayonnaise
1 tbsp sugar-free ketchup
1 tbsp mustard
1 tbsp pickle relish (no sugar added if possible)
½ tsp paprika
½ tsp onion powder
½ tsp garlic powder
Optional: 1 tsp apple cider vinegar
Toppings
2 slices cheddar cheese
2–3 pickle slices
2 tbsp finely chopped lettuce
1–2 slices tomato (optional, not traditional)
Extra onion (finely diced)
Step 1: Make the Chaffles
Preheat a mini waffle maker.
In a bowl mix:
Egg
Mozzarella
Almond flour (optional)
Seasonings
Spoon half the mixture into waffle maker.
Cook 3–5 minutes until golden and crisp.
Repeat for second chaffle.
Set aside to cool slightly (they crisp up more as they cool).
Step 2: Cook the Beef Patties
Form beef into two thin patties (Big Mac style).
Season with salt, pepper, garlic powder.
Cook on medium-high heat:
2–3 minutes per side for thin patties
Add cheddar cheese on top and let melt.
Step 3: Make Keto Big Mac Sauce
Mix all sauce ingredients in a bowl until smooth.
Taste and adjust:
More tang → add vinegar or mustard
More sweetness → add keto sweetener
More smokiness → add paprika
Step 4: Assemble the Big Mac Chaffle
Layer in this order:
Bottom Chaffle
Spread Big Mac sauce
Add lettuce
Add first beef patty with melted cheese
Add pickles + onion
Middle Layer (Optional but authentic)
Another chaffle (for double-decker style)
Top Layer
More sauce
Second beef patty
Lettuce, pickles, onion
Top chaffle
Press gently to hold together.
Step 5: Serve
Serve immediately while warm for best texture contrast:
Crispy chaffle bun
Juicy beef patties
Creamy tangy sauce
Nutrition (Approximate per full burger)
Calories: 650–750
Protein: 45–55 g
Fat: 50–60 g
Net Carbs: 4–7 g
Variations
- Spicy Big Mac Chaffle
Add:
Jalapeños
Spicy mayo (sugar-free hot sauce + mayo)
- Bacon Big Mac
Add:
2 strips crispy bacon per layer
- Double Meat Keto Burger
Use:
3 patties instead of 2 for high-protein keto
- Extra Crispy Chaffle
Add:
1 tsp parmesan to batter
Cook slightly longer until deeply golden
Tips for Best Results
Let chaffles cool 2–3 minutes before assembling (prevents sogginess).
Use 80/20 beef for juicier patties.
Don’t overload sauce—Big Mac flavor is about balance.
If chaffles soften, toast them again for 1–2 minutes.
