- 2 tablespoons finely chopped onion
- 2 tablespoons ketchup
- 1 garlic clove, minced
- 1 teaspoon sugar
- 1 teaspoon Worcestershire sauce
- 1 teaspoon steak sauce
- 1/4 teaspoon cider vinegar
- 1 pound ground beef
- 4 slices sharp cheddar cheese
- 4 hamburger buns, split and toasted
- 8 cooked bacon strips
- Optional toppings: lettuce leaves and tomato, onion and pickle slices