Mini Greek Burgers

Sauce

• 3/4 cup Yoplait® Fat Free plain yogurt (from 2-lb container)
• 1 teaspoon grated lemon peel
• 1 clove garlic, finely chopped
• 1/4 teaspoon salt
• 1/4 teaspoon dried dill weed

Burgers

• 1 lb lean (at least 80%) ground beef
• 1/4 cup Progresso™ plain bread crumbs
• 1 tablespoon balsamic vinegar
• 2 teaspoons finely grated lemon peel
• 2 teaspoons fresh lemon juice
• 1 teaspoon dried oregano leaves
• 1 teaspoon dried thyme leaves
• 1/2 teaspoon salt
• 3 cloves garlic, finely chopped

Breads and Toppings

• 16 mini (2 1/2-inch) pita breads (from one 7-oz bag)
• 1/2 medium cucumber, cut into very thin slices
• 1/4 small red onion, cut into bite-size strips