Caramelized Onion Burgers

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An excellent grilled burger from the southern living's cookbook 30 years of our best recipes"."

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Steps

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Cook onions and sugar in hot oil over low heat 20 to 25 minutes until onion is caramelized , stirring often.

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Stir in the 1 / 4 cup water , vinegar , and 1 / 4 teaspoon of the salt.

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Set aside and keep warm.

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Combine beef , parsley , tomato paste , worcestershire sauce , 1 / 2 teaspoon salt , and pepper.

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Shape into 4 patties.

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Grill over medium-hot heat until beef is no longer pink.

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Serve on buns with caramelized onions , tomato slices and lettuce.

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Ingredients

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onions, sugar, olive oil, water, balsamic vinegar, salt, ground beef, parsley, tomato paste, worcestershire sauce, fresh ground pepper, hamburger buns, tomatoes, lettuce leaf