1/4 to 1/2 cup shredded part-skim mozzarella cheese
1/8 teaspoon dried oregano
1/8 teaspoon pepper
Place pita breads on a baking sheet. Brush each with 1/4 teaspoon oil. Broil 6 in. from the heat for 1-2 minutes or until lightly browned. Turn pitas over; brush with remaining oil. Broil 1-2 minutes longer.
In a microwave-safe dish, microwave spinach on high for 1 to 1-1/2 minutes or until wilted; drain well. Stir in onion and dill.
Top the pitas with tomatoes, spinach mixture and cheeses. Sprinkle with oregano and pepper. Bake at 450° for 7-9 minutes or until cheese is lightly browned.