Jalapeno Smash Burgers (Print Version)

# Ingredients:

01 - 4 soft hamburger buns.
02 - 1 1/2 pounds of minced beef (80% lean).
03 - 4 slices of cheddar cheese (or French equivalent).
04 - 2 teaspoons kosher salt.
05 - 1 teaspoon ground black pepper.
06 - A thinly sliced large onion.
07 - Thin slices of 1 large fresh chili pepper (like piments d'Espelette).
08 - 1 teaspoon vegetable oil.
09 - 3 tablespoons of creamy mayonnaise.
10 - 1 1/2 tablespoons of tomato sauce.
11 - 1 teaspoon of Worcestershire sauce.
12 - 1/4 teaspoon garlic seasoning.
13 - A pinch of kosher salt for the sauce.
14 - 1/2 teaspoon black pepper for extra flavor in the sauce.

# Instructions:

01 - In a small bowl, stir together mayo, tomato sauce, Worcestershire, garlic powder, a little pepper, and salt until smooth and creamy.
02 - Take the minced beef and divide it into eight portions weighing about 85 grams each. Lightly roll them into balls without pressing too hard.
03 - Get your cast-iron skillet or griddle sizzling hot—450° to 500°F—whether you're using a stovetop or barbecue.
04 - Cut some small parchment paper squares (about 7.5 cm) so they’re ready to help press the patties.
05 - Add oil to the hot skillet and drop the onions into eight small heaps, about a quarter-cup in size.
06 - Scatter thin slices of chili on top of the onion piles. Sprinkle with some kosher salt and pepper for added taste.
07 - Let the onion-chili piles cook for 30 to 60 seconds without touching them, so they develop a little brown color.
08 - Put one of your beef balls on each onion pile and cover it with one of the parchment paper squares.
09 - Press the beef balls firmly with the back of a spatula or burger tool, flattening them into super-thin patties about 10 cm wide.
10 - Sprinkle a bit more salt and pepper on top of the freshly smashed patties.
11 - Cook the patties for 2 to 3 minutes without moving them. They'll crisp up around the edges and get golden.
12 - Gently flip the patties over, making sure the onion-chili topping is now on top.
13 - Set cheddar slices on four of the patties and cook another 1.5–2 minutes until golden and bubbly.
14 - Stack a plain patty on top of one that has melted cheese, making it a two-layer burger.
15 - Spread the sauce on toasted buns, assemble the burgers, and serve them hot right away.

# Notes:

01 - As good as you’d get at a top restaurant.
02 - Crisp, crunchy outside bits.
03 - A touch of spicy flavor.
04 - Effortless cooking technique.