Ingredients

Seasoning:
2 tablespoons olive oil
1 tablespoon chopped fresh oregano or 1 teaspoon dried oregano leaves, crushed
2 cloves garlic, minced
1/2 teaspoon ground black pepper
1 pound well-trimmed boneless beef top sirloin or beef tenderloin steaks, cut in 1-inch cubes
8 ounces medium mushrooms
2 medium red, yellow or green bell peppers, cut into 1-inch pieces
Salt

Cucumber-Yogurt Sauce:
1/2 cup plain yogurt
1/3 cup finely chopped seeded cucumber
2 tablespoons crumbled feta cheese
1 clove garlic, minced
1/4 teaspoon ground black pepper
1/8 teaspoon salt

Directions

Combine seasoning ingredients in large bowl. Add beef, mushrooms and bell pepper pieces; toss to coat. Alternately thread beef and vegetable pieces evenly onto 8 12-inch metal skewers, leaving small spaces between pieces. Grill kabobs, covered, over medium-hot coals, 7-9 minutes for medium rare to medium doneness, turning once. Season with salt as desired.

Meanwhile, combine sauce ingredients in small bowl. Serve with kabobs.