Blue Cheese-Stuffed Chipotle Burgers

Instructions

Barbecue Sauce:

1. Sauté onion in olive oil in a saucepan over medium-high heat until tender. Reduce heat to medium. Add garlic; cook and stir for 1 minute. Stir in the ketchup, brown sugar, honey, chipotle peppers, apple cider vinegar, Worcestershire sauce and mustard.
2. Bring to a boil, stirring constantly. Reduce heat low. Simmer, uncovered, for 20 minutes, stirring frequently. Remove from the heat. Season with salt and pepper.

Burgers:

1. Grease grill grate. Heat grill to medium. 
2. Crumble beef over Worcestershire sauce in a large bowl; mix just until combined. Divide beef mixture into eight portions; shape into balls. Form into patties, each about 1/4-inch thick. Place blue cheese into the center of four patties. Top with remaining patties; press meat edges to seal. Season with salt and pepper.
3. Grill burgers, covered, over medium heat for 5-8 minutes on each side or until a thermometer inserted into patties reads 160°F. 
4. Spread barbecue sauce on bun bottoms; top with burgers, barbecue sauce, lettuce and tomato. Replace bun tops.