Caramelized Onion Butter Burgers

• 6 tablespoons Land O Lakes Butter with Olive Oil & Sea Salt
• 1 large (2 1/2 cups) red onion, thinly sliced
• 1 large (2 1/2 cups) white onion, thinly sliced
• 1 large (2 1/2 cups) yellow onion, thinly sliced
• 1/4 teaspoon salt
• 1/4 teaspoon pepper
• 2 teaspoons sugar
• 1 teaspoon balsamic vinegar
• 1 pound lean ground beef
• 1 teaspoon balsamic vinegar
• 1/2 teaspoon salt
• 1/2 teaspoon pepper
• 1/2 teaspoon Worcestershire sauce
• 2 tablespoons Land O Lakes Butter with Olive Oil & Sea Salt
• 8 (3 1/4-inch) silver dollar or dinner rolls

1. Melt 6 tablespoons Butter with Olive Oil & Sea Salt in 12-inch skillet over medium-high heat until sizzling; add onions, 1/4 teaspoon salt and 1/4 teaspoon pepper.
2. Cook, stirring occasionally, 5 minutes or until onions begin to soften.
3. Stir in sugar; cook, stirring frequently and scraping brown bits off bottom of pan, 20-25 minutes or until onions are golden brown.
4. Stir in balsamic vinegar.
5. Remove onions from pan; keep warm.
6. Combine all burger ingredients in bowl except butter and rolls; shape ground beef mixture into 8 equal-sized patties.
7. Melt 2 tablespoons Butter with Olive Oil & Sea Salt in same skillet over medium heat until sizzling.
8. Place patties into skillet; cook, turning once, over medium heat 6-8 minutes or until internal temperature reaches at least 160 degrees F and center is no longer pink.
9. Return onions to pan; continue cooking until onions are heated through.
10. Place patties onto bottom half of buns; top with caramelized onions.
11. Serve immediately.

butter, red onion, white onion, yellow onion, salt, pepper, sugar, balsamic vinegar, ground beef, balsamic vinegar, salt, pepper, worcestershire sauce, butter, dinner rolls

Taken from www.landolakes.com/recipe/3427/caramelized-onion-butter-burgers (may not work)