"Grill Mates® Backyard Brew Marinade and beer add unmistakable flavor and moistness to burgers. Serve with red onions caramelized with brown sugar and chipotle chili pepper for a smoky finish...."
INGREDIENTS
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2 tablespoons butter
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1 large red onion, thinly sliced (2 cups)
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1 package McCormick® Grill Mates® Backyard Brew Marinade
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1/4 teaspoon McCormick® Chipotle Chili Pepper
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1/3 cup plus 2 tablespoons beer, divided
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1 tablespoon packed light brown sugar
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1 teaspoon Worcestershire sauce
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1 1/2 pounds ground beef
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6 slices Swiss cheese
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6 hamburger rolls