Turkey Burgers

½ Cup plus 2 Tbsp. Plain Fat-Free Yogurt
2 Green Onions, Green and White Parts Separated (Thinly Sliced)
½ Cup Packed Fresh Mint Leaves (Finely Chopped)
1 Lb. Lean Ground Turkey
1 ½ oz. Feta Cheese (Finely Crumbled)
1 ½ tsp. Ground Coriander
2 Whole Wheat Pitas (Cut in Half)
2 Tomatoes (Thinly Sliced)

Prepare outdoor grill for covered direct grilling on medium. In small bowl, combine ½ cup yogurt, white parts of green onions, and half of the chopped mint. In large bowl, with hands, combine turkey, feta, coriander, 1/8 tsp. salt, ½ tsp. pepper, green parts of green onions, remaining mint, and remaining yogurt. Mix well, then form into 3 ½ inch round patties (each ¾ inch thick.) Place turkey patties on hot grill grate; cover and cook 12 to 13 minutes or just until meat loses its pink color throughout, turning once. (Burgers should reach an internal temperature of 165 degrees F.) During last 2 minutes of cooking, add pits to grill. Cook 2 minutes or until warmed, turning once. Open pitas. Divide burgers, tomato slices, and yogurt sauce among pitas.