Gyro-Burger with Yogurt Sauce

Gyro-Burger

1 pound ground American lamb
1 teaspoon dried oregano, crushed
1/2 teaspoon garlic powder
1/2 teaspoon pepper
1/4 teaspoon onion powder
1/4 teaspoon ground cumin
1/4 teaspoon salt
2 pita bread rounds (6-inch), halved crosswise
1 cup chopped fresh spinach or lettuce

Yogurt Sauce
3/4 cup plain low-fat yogurt
1/2 medium cucumber, peeled and chopped (about 2/3 cup)
2 green onions, thinly sliced
1 tablespoon chopped fresh mint or 1 teaspoon dried mint, crushed
1/4 teaspoon granulated sugar
1/4 teaspoon garlic powder
Salt, optional

Gyro-Burger

In large bowl, combine oregano, garlic powder, pepper, onion powder, cumin and salt. Add lamb; mix well. Form into 4 patties, each about 3/4-inch thick. Grill over medium coals or broil about 5 minutes on each side or to desired degree of doneness.

Yogurt Sauce
In medium bowl, combine yogurt, chopped cucumber, sliced green onion, mint and sugar.

Split open each pita half to form a pocket. Place gyro-burger in each pocket; top with chopped spinach and yogurt mixture.