INGREDIENTS
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2 tablespoon olive oil
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1 large Vidalia onion, sliced
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Pinch of salt
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½ teaspoon balsamic vinegar
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¼ cup regular mayonnaise
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¼ cup barbecue sauce
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⅛ teaspoon liquid smoke
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1 pound ground beef
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¼ cup shredded cheddar cheese
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2 slices cooked bacon, crumbled
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2 teaspoon worcestershire sauce
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½ teaspoon liquid smoke
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½ teaspoon salt
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Pinch of freshly cracked black pepper
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4 hamburger buns