Our pastor made this for a get-together, and my husband and i just couldn't stay away from the hors d'oeuvres table. The cheesy slices taste great served warm, but they're still wonderful when they've cooled slightly. —Krysten Johnson, Simi Valley, California
Place crust on an ungreased 14-in. pizza pan. In a small bowl, combine Parmesan cheese, mayonnaise, onion, garlic and oregano; spread over crust. Bake at 450° until edge is lightly browned, 8-10 minutes. Cut into wedges. If desired, serve with Alfredo sauce.