Mini Spinach-and-Cheese Pizzas

Bocconcini are just bite-size morsels of fresh mozzarella. Look for them at specialty food stores and Italian markets, as well as many supermarkets; they're usually packaged in water or whey for freshness. Choose part-skim ricotta instead of regular; it has comparable creaminess, with fewer calories and less fat. Whole-wheat pitas are fiber-rich — and tasty.