Body
1. Divide meat into 8 equal portions. Roll each portion into a ball. Place in refrigerator for a minimum of 30 minutes.
2. Meanwhile make Matty’s Patty’s sauce by mixing mustard, ketchup, mayonnaise, pickles, and onion in a bowl
3. Heat a cast-iron pan over medium-high. Place two meatballs in the pan. Immediately flatten using a hamburger press or metal spatula to form two thin patties. Season patties with salt and pepper. Cook patties until brown, about 30 seconds per side. Place one piece of cheese on each patty.
4. Place one patty on the bottom bun, spoon sauce over patty then layer on the second patty and top bun. Repeat with the remaining ingredients.