MAKE THE BIG MAC SAUCE: In a small bowl, mix together the mayonnaise, relish, ketchup, mustard, sugar, vinegar, paprika, onion powder, and garlic powder. Set aside.
PREPARE THE TACOS: To each tortilla, add about ¼ cup of ground beef and flatten out to completely cover the surface to the edges. Add more meat if you prefer a thicker patty. Sprinkle with salt and pepper on top.
COOK THE TACOS: Over medium-high heat in a skillet or pan, add a small splash of vegetable oil. Add the tacos in, meat face down, two to three at a time or more if you have a large grill/skillet. It will take about 2-3 minutes for the patty to get a nice brown crust. Flip over, lower the heat, and add a slice of American cheese on top of the patties. Cover and let it cook for about 2 to 3 more minutes for the cheese to melt and the tortilla to get golden and crispy. Then take off the heat and cook the rest of the tacos.
ASSEMBLE THE BIG MAC TACOS: To the taco, add lettuce, onion, pickles, and big mac sauce on top. Enjoy warm!
