Greek Meatball Subs

From The National Beef Cookoff.

• Ready In: 40 mins
• Serves: 4

Ingredients

• 1 1⁄2 lbs ground beef
• 4  soft  hoagie rolls (6 to 7 inches long each)
• 2⁄3 cup plain yogurt
• 1  tablespoon  all purpose Greek seasoning
• 1⁄2 teaspoon salt
• 1⁄2 teaspoon black pepper
• 1  cup tomatoes, chopped
• 1  cup  chopped cucumbers or 1  cup  sliced cucumber
• 1⁄4 cup kalamata olive, chopped

• Creamy Yogurt Sauce

• 1⁄3 cup plain fat-free yogurt
• 2  ounces feta cheese, crumbled
• 1 1⁄2 teaspoons  all purpose Greek seasoning
• 1⁄4 teaspoon black pepper

Directions

1. Heat oven to 425°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.
2. 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 16 equal portions; shape into meatballs. Place on rack in broiler pan. Bake in 425°F oven 18 to 20 minutes.
3. Meanwhile combine Creamy Yogurt Sauce ingredients in small bowl. Set aside.
4. Place 4 meatballs in each roll. Top evenly with Creamy Yogurt Sauce, tomato, cucumber and olives.