Line a large baking sheet or workspace with parchment paper and set aside.
Place 6 oz bright green candy melts in a medium, microwave safe bowl.
Melt on 50% power for 1 minute, then stir. Return to microwave for 30 second intervals until candy is completely melted and smooth.
Using a fork, carefully dip cookies into the candy melts and with a small spatula cover the entire cookie on all sides. Tap the fork lightly against the side of the bowl to get rid of excess coating before placing the cookie on parchment paper to set. Repeat with remaining cookies.
If you are working in a cold kitchen, or this process takes too long, the candy melts will begin to harden. If this happens, simply return the bowl to the microwave for 30 seconds or more to warm them up again.
Once the cookies are cooled, melt the black candy melts in a microwave safe bowl or in a Wilton Candy Decorating Bag. Pipe hair, nose and mouth on your cookies. Be creative! Give the Frankenstein cookies some character!
Use a bit of extra candy melts to adhere the candy eye balls to your Frankenstein cookies
Allow cookies to harden completely before serving.
Store at room temperature in an airtight container for up to three days.