Place 1/2 container of vanilla frosting in a microwaveable bowl. Microwave on high for 10 seconds, stir and microwave for another 10 seconds.

Add green gel food coloring to frosting and stir to combine. Add food coloring until desired color is achieved.

Dip cookie halfway into colored frosting. Allow extra frosting to drip off the edge of cookie.

Place on parchment paper and allow frosting to set.

When frosting is completely set and dry, brush a line along edge of frosting with clear Karo syrup.

Immediately apply sprinkles to line of syrup. Allow to dry