What you’ll need
Twist the cookies apart and wipe away the filling with a butter knife.
Cut the cookies in half with a sawing motion and snap the cookies in half.
Add 1/2 a stick of softened butter and 1/4 cup of vegetable shortening to a bowl.
Add a teaspoon of vanilla extract and 1.5 cups of powdered sugar.
Add a table spoon of heavy whipping cream.
Add blue food coloring and whip.
Fill piping bag, pipe icing into the cookie and angle the other half on top.
Using the Wilton 233 tip, add the squiggly parts to the side of the cookie.
Add two edible eyeballs to the top part of each cookie.
Put a cookie in the Cookie Monster’s mouth.