Meat Loaf Burgers With Caramelized Onions

• Onions:
• 1 teaspoon olive oil
• 4 1/2 cups vertically sliced red onion (about 2 medium onions)
• 1/4 teaspoon salt
• 1 tablespoon sugar
• 2 tablespoons balsamic vinegar
• Burgers:
• Cooking spray
• 1 cup finely chopped green bell pepper
• 1 cup finely chopped celery
• 1 cup crushed whole wheat crackers (about 20 crackers)
• 1/3 cup ketchup, divided
• 1/2 teaspoon dried thyme
• 1/4 teaspoon salt
• 1 pound ground sirloin
• 1 large egg
• 12 (1 1/4-ounce) slices rye bread, toasted

1. Prepare grill or broiler.
2. To prepare onions, heat olive oil in a large nonstick skillet over medium-high heat. Add onion and 1/4 teaspoon salt; saute 12 minutes or until golden brown. Stir in sugar and vinegar; cook 30 seconds. Remove from pan.
3. To prepare burgers, heat pan coated with cooking spray over medium-high heat. Add bell pepper and celery; saute 3 minutes or until tender.
4. Combine the bell pepper mixture, crackers, 1/4 cup ketchup, thyme, 1/4 teaspoon salt, beef, and egg in a large bowl. Divide mixture into 6 equal portions, shaping each into a 1/2-inch-thick patty.
5. Place patties on a grill rack or broiler pan coated with cooking spray; cook 5 minutes. Carefully turn patties over; brush with remaining ketchup. Cook 5 minutes or until done.
6. Place 1 patty on each of 6 bread slices. Top each patty with 1/4 cup onion mixture and 1 bread slice.

onions, olive oil, red onion, salt, sugar, balsamic vinegar, burgers, cooking spray, green bell pepper, celery, whole wheat crackers, ketchup, thyme, salt, ground sirloin, egg, rye bread

Taken from www.myrecipes.com/recipe/meat-loaf-burgers-with-caramelized-onions (may not work)