California Pizza Kitchen Roasted Artichoke Spinach Pizza

1 prebaked 12-inch pizza crust
1 tablespoon olive oil
1 cup spinach dip
1 cup shredded part-skim mozzarella cheese
1 jar (7-1/2 ounces) marinated quartered artichoke hearts, drained
1/2 cup oil-packed sun-dried tomatoes, patted dry and chopped
1/4 cup chopped red onion

Preheat oven to 450°. Place crust on an ungreased pizza pan; brush with oil. Spread spinach dip over top. Sprinkle with cheese, artichokes, tomatoes and onion.
Bake until cheese is melted and edge is lightly browned, 8-10 minutes. Cut into 24 pieces.