Pipe the icing onto one whoppie pie cake and top with a second cake. Sprinkle on the black sprinkles.
Alternatively, you can use halloween stencils and powdered sugar to put designs on the tops of the whoopie pies. See notes.
Another option is to add 8 licorice legs and candy eyes to make whoopie pie spiders! See notes.
Recipe makes 18 smaller whoopie pies or 9 large whoopie pies
How to Stencil Designs onto Halloween Whoopie Pies
Either purchase small halloween-themed stencils or print/cut out the desired designs you wish to stencil on. Make sure the stencil completely covers the whoopie pie to ensure you don’t get powdered sugar where you don’t want it. Use powdered sugar and a sifterto lightly cover the stencil. Carefully remove the stencil to see your design!
How to Make Halloween Whoopie Pie Spiders
To make Halloween Whoopie Pie Spiders, use 8 pieces of black licorice for the legs. Lay the licorice onto the icing before topping with the second whoopie pie. Use a little bite of extra cake icing to stick candy eyes onto the tops of the pies. You may want to color your cake icing black (or use chocolate flavor!) for this version.