"Barbecue sauce, caramelized onions, and Monterey Jack cheese mixed into ground beef, make this onion burger recipe moist and delicious!..."
INGREDIENTS
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2 tablespoons extra-virgin olive oil
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1 medium sweet onion (, finely diced)
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1 small sweet onion (, sliced 1/2-inch thick circles)
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1 pound lean ground beef
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1/4 cup barbecue sauce
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1 cup shredded Monterey Jack cheese
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salt and pepper (, to taste)
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4 hamburger buns
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3 tablespoons mayonnaise
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1 1/2 tablespoons barbecue sauce
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lettuce, tomato, pickles (, for serving)