Blue Cheese-Stuffed Burgers

• Cooking spray
• 1/2 cup finely chopped onion
• 1 pound ground round
• 3 tablespoons dry breadcrumbs
• 2 tablespoons water
• 1 egg white, lightly beaten
• 1/4 cup (1 ounce) crumbled blue cheese
• 1/4 cup fat-free sour cream
• 4 (1-ounce) English muffins, toasted
• 4 lettuce leaves
• 4 (1/4-inch-thick) slices tomato

1. Coat a small nonstick skillet with cooking spray; place over medium heat until hot. Add onion; saute 5 minutes or until tender. Remove from heat; let cool. Combine onion, beef, breadcrumbs, water, and egg white in a large bowl; stir well. Divide mixture into 8 equal portions, shaping into 1/2-inch-thick patties. Spoon 1 tablespoon cheese into the center of 4 patties; top with remaining patties. Press edges together to seal.
2. Prepare grill. Place patties on grill rack coated with cooking spray; grill 4 minutes on each side or until done.
3. Spread 1 tablespoon sour cream over top half of each muffin, and set aside. Line bottom halves of muffins with lettuce leaves; top each with a tomato slice,a patty, and top half of muffin.

cooking spray, onion, ground round, breadcrumbs, water, egg, blue cheese, sour cream, english muffins, tomato

Taken from www.myrecipes.com/recipe/blue-cheese-stuffed-burgers (may not work)