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Easy Smash Burger Tacos with Homemade Big Mac Sauce

Big Mac Style Smash Burger Tacos combine juicy smash burger patties, melty American cheese, and classic Big Mac sauce inside toasted tortillas. This viral fusion recipe delivers bold, restaurant-style flavor in under 20 minutes and is perfect for weeknight dinners or entertaining.
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Prep Time 10 minutes
Cook Time 12 minutes
Total Time 42 minutes
Servings: 4 tacos
Course: Main Course
Cuisine: American
Calories: 550
Ingredients Method Notes

Ingredients
  

  • 1 lb ground beef 80/20 blend
  • Salt and black pepper to taste
  • 4 slices American cheese
  • 4 medium flour tortillas
  • ½ cup shredded iceberg lettuce
  • ¼ cup finely diced white onion
  • Dill pickle slices
  • Optional: sesame seeds for garnish
Big Mac Sauce
  • 1 cup mayonnaise
  • ¼ cup sweet pickle relish
  • 2 tbsp yellow mustard
  • 1 tsp white vinegar
  • 1¼ tsp paprika
  • 1 tsp onion powder
  • 1 tsp garlic powder
  • ⅛ tsp white pepper optional

Method
 

  1. In a bowl, whisk together mayonnaise, relish, mustard, vinegar, paprika, onion powder, garlic powder, and white pepper until smooth. Refrigerate for 20 minutes.
  2. Lightly toast tortillas in a dry skillet for 1–2 minutes per side and set aside.
  3. Divide ground beef into 4 loose balls.
  4. Heat a cast iron skillet over medium-high heat until very hot.
  5. Place beef ball in skillet and smash thin with a spatula using parchment paper.
  6. Season with salt and pepper and cook undisturbed for 2 minutes.
  7. Flip patty, top with American cheese, and cook 1–2 minutes until melted.
  8. Spread Big Mac sauce on tortillas, then add lettuce, onion, pickles, and burger patty.
  9. Fold like a taco and serve immediately.

Notes

For the crispiest smash burgers, make sure your skillet is smoking hot before smashing the beef.