1 box Trader Joes vanilla cake mix 1 can of Trader Joes organic pumpkin Follow instructions directly on the cake box. In a large bowl combine ingredients. Add a can of pumpkin. Mix well with a spoon. Spoon the mixture to the very top of each cup cake mold. -Mini cupcake pan – bake for 9 minutes. -Regular size cupcake pan – bake as instructed on the cake mix box.