Mexican Chili-Cheese Burgers

• 1 pound ground round
• 1 cup chopped seeded plum tomato
• 1/4 cup minced fresh cilantro
• 1 tablespoon chili powder
• 2 teaspoons minced seeded jalapeno pepper
• 1/2 teaspoon salt
• 1/2 teaspoon dried oregano
• 1/2 teaspoon ground cumin
• 1/4 teaspoon pepper
• Cooking spray
• 4 (3/4-ounce) slices reduced-fat Monterey Jack or cheddar cheese
• 1/4 cup fat-free sour cream
• 4 (1 1/2-ounce) hamburger buns
• 4 iceberg lettuce leaves
• 8 (1/4-inch-thick) slices tomato
• Grilled onions (optional)

1. Combine first 9 ingredients in a bowl; stir well. Divide mixture into 4 equal portions, shaping into 1/2-inch-thick patties.
2. Prepare grill. Place patties on grill rack coated with cooking spray; grill 6 minutes on each side or until done. Place 1 cheese slice on top of each patty; cover and grill an additional minute or until cheese melts.
3. Spread 1 tablespoon of sour cream over top half of each bun, and set aside. Place patties on bottom halves of buns; top each with lettuce, tomato, onions (if desired), and top half of bun.

ground round, tomato, fresh cilantro, chili powder, pepper, salt, oregano, ground cumin, pepper, cooking spray, cheddar cheese, sour cream, buns, tomato, onions

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