Cheeseburgers With Caramelized Onion

• 1 lb ground beef
• 2 tbsp olive oil
• 2 None white onions, peeled and thinly sliced
• 1 tbsp light brown sugar
• 2 tbsp balsamic vinegar
• 4 slices cheddar cheese
• 4 None hamburger buns, split
• 1 None tomato, sliced thinly
• 8 leaves butter lettuce
• 4 None dill pickles, thinly sliced
• None None Yellow mustard, to serve
• None None Ketchup, to serve

1. Place the beef in a bowl and season, then shape into 4 patties. If using a grill, preheat.
2. Heat the oil in a large frying pan and cook the onion, stirring, until soft. Add the sugar, vinegar and 2 tbsp water and cook, stirring, until the onion is caramelized.
3. Cook the beef patties on the grill or a heated, oiled frying pan until cooked to desired doneness. Top each burger with a slice of cheese during last minute of cooking.
4. Meanwhile, toast the buns, cut-sides down, on the grill or an oiled frying pan.
5. Divide the burgers, caramelized onion, tomato, lettuce and pickle among the buns and serve with mustard and ketchup.

ground beef, olive oil, white onions, brown sugar, balsamic vinegar, cheddar cheese, buns, tomato, butter, dill pickles, yellow mustard, ketchup

Taken from recipes-plus.com/api/v2.0/recipes/29454 (may not work)