Start by crumbling the cake into a large mixing bowl, breaking it apart with your hands until fine crumbs form.
Add melted butter and vanilla frosting to the cake crumbs. Mix thoroughly with a spoon or your hands until well combined and the mixture becomes moldable.
Divide the mixture and roll it into 12 equal-sized balls, about the size of a ping pong ball. Slightly flatten each ball to resemble an eyeball shape.
Melt candy melts in a microwave-safe bowl in 30-second intervals, stirring until smooth. Allow to cool slightly if too hot.
Dip each cake ball into the melted candy melts, using a spoon to cover completely. Tap off excess coating and insert a cake pop stick into each eyeball. Place on a cooling rack to set.
Once the coating is firm and dry, melt additional white candy melts for the eyeball whites. Drizzle or brush on small patches of white around the eyeball as desired.
Use black candy melts in a piping bag to add veins and details around the eyeball for a realistic, creepy effect.
Apply small round edible eyes or candies on top of each cake pop to mimic the eyeball’s center.
Use red edible gel or icing to draw bloodshot veins or bloodshot streaks radiating from the centers for extra creepiness.
Allow all decorations to set completely, about 15–20 minutes, until the coating is firm and details are dry.
Serve your spooky eyeball cake pops on a platter, ready to wow guests with their creepy, colorful appearance.