Cast-Iron Burger [Cooking Light] - cooking recipe

Ingredients

PATTIES
1 lb ground sirloin
1/2 teaspoon kosher salt
HORSERADISH SPREAD
1 tablespoon canola mayonnaise
1 tablespoon Dijon mustard
1 tablespoon prepared horseradish
2 teaspoons ketchup
RELISH
2 slices of applewood-smoked bacon, chopped
3 cups vertically sliced yellow onions
1 tablespoon finely chopped chives
1 teaspoon Worcestershire sauce
1/4 teaspoon fresh ground black pepper
REMAINING INGREDIENTS
4 (1 1/2 ounce) hamburger buns or (1 1/2 ounce) kaiser rolls
4 slices tomatoes
1 cup shredded lettuce

Preparation

To prepare the patties, divide beef into 4 portions, lightly shaping each into a 1/2-inch thick patty. Sprinkle evenly with salt. Cover and refrigerate 30 minutes.
To prepare horseradish spread, combine mayonnaise and next 3 incredients (through ketchup) in a small bowl. Set aside.
To prepare relish, cook bacon in a large nonstick skillet over medium-low heat until script. Remove bacon from pan with a slotted spoon. Add onion to drippings pan; cook 15 minutes or until golden brown. Combine bacon, onion mixture, chives, Worcestershire sauce, and pepper in a small bowl.
Heat a large cast-iron skillet over medium-high heat. Coat pan with cooking spray. Add patties; cook 2 minutes on each side or until desired degree of doneness. Spread 1 1/2 teaspoons horseradish spread on cut sides of each bun half. Top bottom half of each bun with 1 patty, 1/4 cut relish, 1 tomato slice, 1/4 cup lettuce, and top half of bun.