Smash Burger Recipe (Print Version)

# Ingredients:

01 - 3 tablespoons mayonnaise.
02 - 1 1/2 tablespoons ketchup.
03 - 1 teaspoon Worcestershire sauce.
04 - 1/2 teaspoon black pepper.
05 - 1/4 teaspoon garlic powder.
06 - 1/4 teaspoon kosher salt.
07 - 1 1/2 pounds ground beef (80% lean).
08 - 1 large yellow onion, sliced thin.
09 - 1 large jalapeño, sliced thin.
10 - 4 American cheese slices.
11 - 4 hamburger buns.
12 - 1 teaspoon canola oil.
13 - 1 1/4 teaspoons kosher salt.
14 - 3/4 teaspoon black pepper.

# Instructions:

01 - Combine mayonnaise, ketchup, Worcestershire sauce, pepper, garlic powder and salt in small bowl until completely smooth.
02 - Divide ground beef into exactly eight 3-ounce portions and gently shape into loose balls without overworking meat.
03 - Preheat cast iron skillet or griddle on grill or stovetop until very hot (450-500°F).
04 - Cut 3-inch square of parchment paper for pressing burgers and set aside nearby.
05 - Drizzle preheated skillet with oil and arrange onion slices in eight separate quarter-cup mounds.
06 - Top each onion mound with thin jalapeño slices and season with portion of salt and pepper mixture.
07 - Cook onion-jalapeño mounds undisturbed for 30-60 seconds until beginning to brown.
08 - Place one beef ball on each onion mound and cover with parchment paper square.
09 - Press firmly with spatula or burger press to create 4-inch wide ultra-thin patties.
10 - Season flattened patties with remaining salt and pepper mixture.
11 - Cook undisturbed for 2-3 minutes until edges become crispy and browned.
12 - Carefully flip patties so onion-jalapeño mixture is on top.
13 - Place cheese slices on four of the patties and cook 1.5-2 minutes until well browned.
14 - Stack plain patties on cheese-covered ones to create four double burgers.
15 - Spread sauce on toasted buns and serve burgers immediately while hot.

# Notes:

01 - Restaurant quality.
02 - Crispy edges.
03 - Spicy kick.
04 - Perfect technique.