Components:
Commercial
– 1½ kilos floor beef
– 2 teaspoons Worcestershire sauce
– 1 teaspoon kosher salt
– ½ teaspoon floor black pepper
– 12 slices sourdough bread
– ½ cup Secret Sauce (recipe under)
– 3 medium Vidalia onions, thinly sliced
– 6 slices Cheddar cheese
– 8 tablespoons unsalted butter
Secret Sauce:
– ¼ cup Dijon mustard
– ¼ cup mayonnaise
– 1 tablespoon barbecue sauce
– ½ teaspoon sizzling sauce
Secret Sauce Directions:
In a small bowl, stir collectively mustard, mayonnaise, barbecue sauce, and sizzling sauce. Retailer, coated, within the fridge for as much as 3 days.
Directions:
Commercial
1. In a big bowl, mix floor beef, Worcestershire sauce, salt, and pepper. Form the bottom beef into 6 oval patties.
2. In a medium cast-iron skillet, soften 2 tablespoons of butter over medium warmth. Add the thinly sliced onions. Prepare dinner, stirring sometimes, till the onions are comfortable and golden brown, roughly 35 minutes.
3. In a big cast-iron skillet, cook dinner the patties over medium-high warmth till they’re browned and cooked by, roughly 2 minutes per aspect. Take away the skillet from warmth and take out the patties; wipe out the skillet.
4. Layer 1 slice of sourdough bread with 1 tablespoon of Secret Sauce, 2 to three tablespoons of caramelized onions, 1 slice of Cheddar cheese, 1 patty, and one other 1 tablespoon of Secret Sauce. Prime with one other slice of sourdough bread. Repeat with the remaining bread, Secret Sauce, caramelized onions, cheese, and patties.
5. Warmth the skillet over medium-high warmth. Soften 2 tablespoons of butter within the skillet. Working in batches, cook dinner the sandwiches, flipping as soon as, till they’re golden brown and heated by, roughly 3 minutes per aspect. Add the remaining butter to the skillet as wanted.