BIG MAC SMASHBURGER TACOS

1. Caramelized onions make everything better, so let’s get those going. Slice your onions and cook them low and slow with 2 tbsp of butter and a splash of olive oil in a skillet. Keep the heat low and stir occasionally for 20-30 minutes until they’re golden and slightly crispy.
2. Roll the ground beef into four tennis-ball-sized balls (around 2 inches in diameter). Flatten each one directly onto a tortilla. You’re going for a super-thin layer of meat that slightly overhangs the edges of the tortilla. If you can still see the tortilla flatten it more! Season the meat side with salt and pepper to taste.
3. Heat up a stainless steel or cast iron pan until it’s screaming hot. Place the tortilla with the beef side down onto the pan. Cook for 3 minutes without touching it - you’re looking for that crispy, caramelized crust. Brush the tortilla side with a little oil, then flip. Add a slice of cheddar cheese on top of the beef, cover with a lid, and cook for another 2 minutes until the cheese is gooey.
4. Mix all the Big Mac sauce ingredients in a bowl. It’s ridiculously easy and tastes better than anything from the drive-thru.
5. Assemble the smash burger tacos by adding pickles, the caramelized onions, lettuce, and a generous spoonful of big mac sauce.