Blue Cheese-Stuffed Burgers

Ingredients

• 1 ounce cheese blue crumbled
• 3 tablespoons breadcrumbs dry
• 1  egg white lightly beaten
• 4 ounce muffins english toasted
• 1 pound ground round 
• 4  lettuce leaves 
• 0.5 cup onion finely chopped
• 0.3 cup cup heavy whipping cream fat-free sour
• 1 inch tomatoes 
• 2 tablespoons water 

Equipment

• bowl
• frying pan
• grill

Directions

1. Coat a small nonstick skillet with cooking spray; place over medium heat until hot.
2. Add onion; saute 5 minutes or until tender.
3. Remove from heat; let cool.
4. 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.
5. Prepare grill.
6. Place patties on grill rack coated with cooking spray; grill 4 minutes on each side or until done.
7. 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.