Two bundt cakes make a pumpkin! The stem is a green ice cream cone. You could use any ice cream cone and frost it with green icing. The cakes can be any flavor. Use food coloring to make the orange icing. I would probably frost the whole cake.
Glazed Mini Pumpkin Cakes with Caramel Rum Glaze - two mini bundt cakes stacked together - using Trader Joe's Pumpkin Bread Mix: Modify the mix: 2 eggs, c. water, 1 whole jar of Trader Joe's Pumpkin Butter.