Turkey Burgers with Blueberry BBQ Sauce

Directions

• In a large skillet, cook onion and garlic in oil over medium heat until tender. Stir in the blueberries, brown sugar, pepper, vinegar, mustard and Worcestershire sauce. Cook and stir until thickened, about 10 minutes. Cool slightly. Transfer to a food processor; cover and process until smooth.
• Shape turkey into four patties; sprinkle with salt and pepper. Place mushrooms on a double thickness of heavy-duty foil (about 12 in. square). Fold foil around mushrooms and seal tightly.
• Grill burgers and mushroom packet, covered, over medium heat for 5-7 minutes on each side or until a thermometer inserted into the burgers reads 165° and juices run clear. Top burgers with cheese; cover and grill 1-2 minutes longer or until cheese is melted.
• Place buns, cut side down, on grill for 1-2 minutes or until toasted. Serve burgers on buns with mushrooms, spinach and blueberry sauce.