London Broil Sandwiches with Yogurt-Cucumber Sauce

Ingredients

• 1 1/2 pounds London broil (about 3/4-inch thick)
• 2 garlic cloves, minced
• 1/3 cup fresh lemon juice
• 1 tablespoon Greek seasoning
• 1 tablespoon olive oil
• 1 (8-ounce) container plain nonfat yogurt
• 1 large cucumber, peeled, seeded, and chopped
• 1 tablespoon fresh lemon juice
• 1/2 teaspoon dried dillweed
• 6 pita bread rounds
• Shredded lettuce
• 1 large tomato, diced
• Garnishes: fresh dill, lemon wedges, cucumber slices

Preparation

1. Place beef between 2 sheets of heavy-duty plastic wrap; flatten to 1/2-inch thickness using a meat mallet or rolling pin.
2. Combine garlic and next 3 ingredients in a shallow dish or large heavy-duty zip-top plastic bag; add beef. Cover or seal, and chill 8 hours. Remove beef from marinade, discarding marinade.
3. Stir together yogurt and next 3 ingredients. Set aside.
4. Grill beef, covered with grill lid, over medium-high heat (300° to 350°) 7 minutes on each side or to desired degree of doneness. Let stand 5 minutes. Cut into thin slices.
5. Place beef evenly down center of warm pita rounds. Top with yogurt mixture, lettuce, and tomato; roll up. Garnish, if desired, and serve immediately.