Line a baking sheet with parchment paper; secure with masking tape. Sprinkle the paper with cornmeal. Unroll dough onto paper; let stand 5 minutes. Pat dough into a 12-inch square. Arrange zucchini and tomato over the dough, leaving a 1-inch border. Sprinkle evenly with salt and pepper. Fold edges of dough over zucchini and tomato (dough won't completely cover the zucchini and tomato).
Bake at 400° for 15 minutes or until the dough is lightly browned. Top with cheese; bake 5 minutes or until cheese melts. Drizzle with oil; sprinkle with basil. Cool on baking sheet 10 minutes on a wire rack.