Creating Big Mac Smash Tacos is simple if you follow these steps:

1. Cook the Beef: In a skillet over medium heat, brown the ground beef until fully cooked. Drain excess grease.
2. Add Seasoning: Stir in the taco seasoning and follow the package instructions for adding water, usually about 2/3 cup. Let simmer for 5 minutes.
3. Prepare the Sauce: In a bowl, combine mayonnaise, ketchup, mustard, vinegar, and sugar. Mix until well combined.
4. Prepare Taco Shells: If using hard taco shells, preheat the oven according to package instructions and warm them for about 5 minutes.
5. Assemble Tacos: In each taco shell, layer the seasoned beef, followed by a drizzle of the special sauce.
6. Add Toppings: Top with chopped lettuce, diced tomatoes, shredded cheese, and pickles.
7. Serve Immediately: Enjoy your tacos while they are still warm!

These steps will guide you in creating these amazing tacos effortlessly.