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French Onion Burgers with Bacon and Cheese

I have been trying to make the perfect burger for some time. I think I found it in the burger below. It is the right combination of bacon, cheese, onions and a big slice of ripe summer tomato. This is a twist on the backyard burger. The onions are cooked in butter and thyme and prepared the same way as in French onion soup. The bacon is in the form of pancetta and lends a crispy bite to the burger. I added Gorgonzola to the mixture for it’s salty, tangy quality, and topped it with a mild Gruyere. . This is a moist burger that hits your senses on all levels. All you need is the perfect egg roll or bakery Brioche roll to enjoy this delightful burger with a twist.


(1) 2 tablespoons butter
(2) 2 tablespoons olive oil
(3) 3 cups onions, thinly sliced
(4) 2 tablespoons thyme, fresh and chopped finely
(5) 2 teaspoons sugar
(6) 2 teaspoons salt
(7) 3 teaspoons pepper, ground, divided
(8) 1 pound ground chuck
(9) 1 pound ground sirloin
(10) 4 ounces pancetta, diced, fried and drained
(11) 4 ounces Gorgonzola, crumbled
(12) 1 tablespoon Worchester sauce
(13) 8 slices gruyere cheese
(14) ½ cup mayonnaise
(15) 8 slices tomato, heirloom variety
(16) 6 Brioche hamburger rolls


In a medium saucepan over medium heat, melt butter and olive oil. Add onions and thyme, reduce heat to low and cook covered for about 10-15 minutes, until onions are softened, but have no color. Remove cover, add sugar, salt, 2 teaspoons pepper and cook for 10-15 minutes until onions have caramelized, but not burned. Take off heat and let cool.

Prepare a medium-hot fire in a charcoal grill with a cover, or preheat a gas grill to medium-high.

To make the patties, combine chuck, sirloin, pancetta, Gorgonzola, Worchester sauce, remaining teaspoon pepper and two thirds of the onion filling. Handling the meat as little as possible to avoid compacting it, mix well. Divide the mixture into 8 equal portions and place on a tray.

When the grill is ready, brush the grill rack with vegetable oil. Place the patties on the rack, cover and cook 5-7 minutes. Brush each side of the hamburger bun with olive oil and place on the grill at the same time you flip burgers to the second side, Cook burgers for another 5-7 minutes or until the juices run clear when the patties are pierced in the center. Top with one slice of cheese each for final 3 minutes of grilling.

Mix mayonnaise and remaining third of onion mixture.

To assemble the burgers, spread 1 tablespoon of mayo onion mixture on bottom of bun; add 1 tomato slice, top with the burger, and top bun.


This is a bold burger and can be enjoyed with a red wine and a hearty salad