Grilled Caramelized Onion Burgers

Grilled Caramelized Onion Burgers

Caramelized onions accent pepper and mustard-seasoned hamburgers in this outdoor grilling recipe.

45 min. prep time
4 servings
252 Ratings


Caramelized Onion

2 large (4 cups) yellow onions, sliced
1 teaspoon finely chopped fresh thyme leaves*
1 teaspoon white wine vinegar
1/4 teaspoon coarse ground pepper
1/8 teaspoon salt


1 1/2 pounds lean ground beef
2 tablespoons stone-ground mustard
1/4 teaspoon salt
2 teaspoons coarse ground pepper
4 onion hamburger buns


Melt butter in 12-inch skillet until sizzling; add onions. Cook over medium heat, stirring occasionally, 35-40 minutesuntil onions are tender and deep golden brown.

Stir in thyme, vinegar, 1/4 teaspoon pepper and 1/8 teaspoon salt. Continue cooking, stirring occasionally, 5 minutes or until onions are caramelized.

Heat gas grill on medium or charcoal grill until coals are ash white.

Combine ground beef, mustard and salt in bowl; mix lightly. Shape into 4 (3/4-inch thick) patties. Sprinkle both sides of patties with pepper.

Place patties onto grill. Grill, turning once, 10-12 minutes or until internal temperature reaches at least 160°F or until desired doneness.

Grill hamburger buns until toasted. Fill buns with hamburgers; top each with 1/4 cup onion mixture.


*Substitute 1/4 teaspoon dried thyme leaves.

Broiling Directions: Prepare onions and patties as directed above. Heat broiler. Place patties onto broiler pan. Broil, turning once, 12-15 minutes or until internal temperature reaches at least 160°F or until desired doneness.

Nutrition Facts (1 serving)

Calories: 490

Fat: 25g

Cholesterol: 110mg

Sodium: 770mg

Carbohydrates: 31g

Dietary Fiber: 3g

Protein: 35g

Recipe #13057©2003Land O'Lakes, Inc.

Recipe Comments & Reviews

This recipe is so simple to do, and the taste is wonderful. The stone-ground mustard works very well, and really compliments the flavors of the carmelized onions. I don't have a grill, so I just did them in a saute` pan. I did add a slice of pepperjack cheese to mine, and I think I now have a replacement for my favorite pattymelt! I made them smaller because of my diet restrictions, and they reheat very well, too. This one is a real winner and will go into my personal cookbook.
came out great and the onions give the burgers an incredible flavor

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