Categories: Burgers
Ingredients
- Caramelized Onion:
- 1 tbsp butter
- 2 large yellow onions, sliced
- 1 tsp finely chopped fresh thyme leaves
- 1 tsp white wine vinegar
- 1/4 tsp black pepper
- 1/8 tsp salt
- Burger:
- 1 1/2 lbs. ground beef
- 2 tbsp stone-ground mustard
- 1/4 tsp salt
- 2 tsp black pepper
- 4 onion burger buns
Directions
-
Melt butter in a 12-inch skillet until sizzling; add onions. Cook over medium heat, stirring occasionally, 35-40 minutes until onions are tender and deep golden brown.
-
Stir in thyme, vinegar, pepper and salt. Continue cooking, stirring occasionally, 5 minutes or until onions are caramelized.
-
Heat charcoal grill until coals are ash white.
-
Combine ground beef, mustard, and salt in a bowl; mix lightly. Shape into 4 patties with pepper.
-
Place patties onto grill. Grill, turning once, 10-12 minutes or until desired doneness.
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Grill burger buns until toasted. Fill buns with burgers; top each with 1/4 cup onion mixture.