Start by combining ½ cup mayonnaise, ¼ cup finely diced dill pickles, 1 tablespoon mustard, 3 tablespoons ketchup, and ½ teaspoon paprika in a bowl. Whisk the mixture well to achieve a smooth and creamy texture. The aromas of mustard and dill should be pronounced and inviting. Once done, refrigerate this Big Mac sauce to allow the flavors to meld.
In a skillet, heat a tablespoon of oil over medium heat. Add 1 pound of ground beef and cook until browned, breaking it up with a spatula for an even texture. Season with salt, pepper, and garlic powder to taste. The beef should smell savory with a slight garlic aroma. Transfer to a bowl and set aside.
Gently heat the 4 soft taco size tortillas on a separate skillet over low heat. This enhances the pliability, making wrapping easier. The tortillas should be warm to the touch but not crispy.
Lay out a tortilla and spread a thin layer of the prepared Big Mac sauce across it. Layer with beef, ½ cup shredded lettuce, ½ cup sliced dill pickles, and ½ cup shredded cheddar cheese. Sprinkle with diced yellow onion to add a fresh crunch.
Carefully fold the tortilla, tucking both sides as you roll to secure the filling. Serve immediately. The wrap should feel warm and slightly crisp on the outside, with a delightful blend of creamy sauce and crunchy interiors.