Place pizza base on 12-inch (30 cm) round pizza pan; sprinkle with cranberries (if using).
In bowl, combine apples, sugar, butter, lemon juice and cinnamon; sprinkle over base. Bake in centre of 450°F (230°C) oven for about 15 minutes or until crust is golden and slightly puffed and apples are tender. Let stand for 5 minutes; using scissors, cut into 8 slices