01 -
Heat your oven to 350°F and line your baking sheets with silicone mats or parchment paper.
02 -
In a large mixing bowl, combine the cake mix, water, oil, eggs, and pudding mix. Beat everything together on medium speed until the mixture is smooth and well combined.
03 -
Using a cookie scoop or spoon, drop evenly-sized portions of batter onto your prepared baking sheets, forming round shapes. Make 36 smaller circles for bite-sized treats or 18 larger ones for standard whoopie pies.
04 -
Bake for 7-10 minutes, depending on size. The cakes should spring back lightly when touched and look set around the edges.
05 -
Let the cakes cool entirely on the baking sheets before handling - this prevents them from breaking apart during assembly.
06 -
Blend the vanilla frosting with orange food coloring gel, adding a little at a time until you achieve your desired Halloween orange shade.
07 -
Spread or pipe the orange frosting generously onto the flat side of half your cakes, then gently sandwich with the remaining cakes.
08 -
Sprinkle black glitter or create stenciled designs with powdered sugar. For spider versions, insert licorice legs and add candy eyes with a dab of extra frosting.