Ingredients
- 1 1/2 lbs ground beef
- 2 tsp Worcestershire sauce
- 1 tsp kosher salt
- 1/2 tsp ground black pepper
- 12 slices sourdough bread
- 1/2 cup secret sauce (see recipe)
- 1 cup caramelized onions (see recipe)
- 6 slices cheddar cheese
- 6 tbs unsalted butter
Preparation
Step 1
in a large bowl, combine ground beef, Worcestershire, salt and pepper. Shape Ground beef into 6 oval patties.
IN a large cast iron skillet, cook patties over medium high heat until browned and cooked through, approx. 2 mins per side. Remove skillet from heat. Remove patties from skillet; wipe out skillet.
Layer 1 bread slice with 1 tbs secret sauce, 2 to 3 tbsp. caramelized onions, 1 slice cheese, 1 patty and another tbsp secret sauce. top with another bread slice. REpeat with remaining bread, secret sauce, caramelized onions, cheese and patties.
Heat skillet over medium high heat. melt 2 tbsp butter in skillet. Working in batches cook sandwiches, flipping once, until golden brown and heated through, approx. 3 mins per side. Add remaining butter to skillet as needed.
SECRET SAUCE:
1/4 cup Dijon mustard
1/4 cup mayo
1 tbs barbecue sauce
1/2 tsp hot sauce
in a small bowl, stir together above ingredients until mixed. Store, covered in refridgerator up to 3 days.
CARAMELIZED ONIONS
2 tbsp unsalted butter
3 medium Vidalia onions, thinly sliced
In a medium cast-iron skillet, melt butter over medium heat. Add onion. Cook, stirring occasionally, until onion is soft and golden brown.