Tickle your taste buds with Greek flavors tonight. Enjoy these sub sandwiches packed with Greek beef meatballs, fresh tomatoes, cucumbers, Kalamata olives and a creamy feta-yogurt sauce.
Heat oven to 400°F. Cut rolls in half most of the way through. Remove and reserve a strip of bread from inside of each roll half. Set rolls aside. Place bread strips in food processor container. Cover; process to form crumbs.
Combine 1 cup bread crumbs, ground beef, 2/3 cup yogurt, 1 tablespoon Greek seasoning, 1/2 teaspoon salt, if desired, and 1/2 teaspoon pepper in large bowl, mixing lightly but thoroughly. Divide beef mixture into 12 2-inch meatballs. Place on rack in broiler pan sprayed with cooking spray. Bake in 400°F oven 24 to 27 minutes.
Meanwhile combine Creamy Yogurt Sauce ingredients in small bowl. Set aside.
Place 3 meatballs in each roll. Top evenly with Creamy Yogurt Sauce, tomato, cucumber and olives.