Line a baking sheet or tray with parchment paper. Set out the 6 Nutter Butter cookies, 12 candy eyeballs, and black decorating gel so everything is ready.

Place ⅓ cup of white candy wafers in a small microwave-safe bowl. Microwave in 30-second intervals, stirring well after each one, until the coating is completely melted and smooth.

Hold one Nutter Butter by the bottom and dip a little more than half of the cookie into the melted coating. Let the excess drip back into the bowl, then place the cookie on the prepared tray.

Immediately place two candy eyeballs near the rounded top of the cookie while the coating is still wet. Repeat the dipping and decorating process with the remaining cookies.

Let the cookies sit at room temperature for about 15 minutes or until the white coating is completely firm.

Use the black decorating gel to make a small circle or oval mouth below the eyes. Serve immediately or store the cookies in a single layer in an airtight container.