Easy Beef Gyros

1 lb lean ground beef
4 plum tomatoes, cut into thin slices
8 small pita pocket bread, cut in half, warmed (4-inch diameter)
SEASONING
1 garlic clove, crushed
1/2 teaspoon salt
1/2 teaspoon dried oregano leaves
1/4 teaspoon pepper
SAUCE
2/3 cup plain yogurt
1/3 cup cucumbers, chopped
3 tablespoons onions, finely chopped
2 teaspoons fresh parsley, chopped

In small bowl, combine Yogurt Sauce ingredients, mixing well. Cover and refrigerate.
Heat oven to 350ºF.
In medium bowl, combine ground beef and seasoning ingredients, mixing lightly but thoroughly.
Divide beef mixture into 16 equal portions and shape into patties 2 inches in diameter.
Place patties on rack in broiler pan.
Bake in oven 10 minutes or until no longer pink.
To serve, place equal amounts of beef and tomato in each pita half; top with yogurt sauce.