CHIPOTLE ONION BURGERS
2 tablespoons butter
1 large red onion, thinly sliced (2 cups)
1 package McCormick Grill Mates Backyard Brew Marinade
1/4 teaspoon McCormick Gourmet Collection Chipotle Chile Pepper
1/3 cup plus 2 tablespoons beer, divided
1 tablespoon packed light brown sugar
1 teaspoon Worcestershire sauce
1 1/2 pounds ground beef
6 slices Swiss cheese
6 hamburger rolls
lettuce, tomato and condiments (optional)
Mix remaining Marinade Mix, remaining 1/3 cup beer and Worcestershire sauce in large bowl until well blended. Add ground beef; mix lightly. Shape into 6 patties.
Grill over medium heat 4 to 6 minutes per side or until burgers are cooked through (internal temperature of 160 degrees). Add cheese slices to burgers 1 minute before cooking is completed. Toast rolls on the grill, open-side down, about 30 seconds or until golden. Serve burgers on toasted rolls with caramelized onions. Garnish with desired toppings and condiments.