Smash Burgers with Charred Onions and Special Sauce

• 1.5 lb ground beef (80/20)
• 4 brioche burger buns
• 4 slice American cheese
• 1 yellow onion
• 1/4 cup mayonnaise
• 2 tbsp ketchup
• 1 tbsp dill pickle relish
• 2 tsp kosher salt
• 1 tsp black pepper

Instructions

1. 1

   Stir together mayonnaise, ketchup and relish to make the special sauce, then set aside.

2. 2

   Divide the beef into loose balls without overworking it.

3. 3

   Heat a griddle or cast-iron pan until ripping hot and lay a thin bed of sliced onions where each patty will go.

4. 4

   Set a beef ball on the onions and smash hard with a spatula until thin, then season with salt and pepper.

5. 5

   Cook 2 minutes until the edges are lacy and crisp, flip, add cheese and cook 1 more minute.

6. 6

   Toast the buns, spread with special sauce, and stack the patties to serve.