Stir cookie mix, oil & egg in a medium bowl until soft dough forms. Press dough into ungreased 12-inch pizza pan & make narrow rim around the edge of pan. Sprinkle choice of toppings on dough & then sprinkle coconut over toppings.
Bake for 10 mins & remove then sprinkle marshmallows on top. Bake for 10 to 15 mins or until mallows are lightly browned & cookie is set at edge.
Cool completely in pan for about 1 hour, then drizzle melted semi-sweet chocolate over the top & then cut into 12 wedges.