First, count your cookies. Each 3D Snowball Cookie calls for 2.25 cookies—one for the front, one for the bottom, and ¼ as the back support. We will cut the cookies into quarters for the back, and it’s normal that some will crack when you cut them. So always minus two to three from your final cookie count. For example, the math for two dozen cookies looks like 24/2.25=10.66. But plan to make seven or eight 3D Cookies rather than ten.
After you do the count, pick the nicer looking ones and use them as the front. Use the okay looking ones as the bottom. Use the worst looking ones as the back support. Put them into three categories: good, okay, and the worst.
Roll out the marshmallow fondant, so it’s 1/8-inch thick and cut out circles that match the size of the cookies.
Use the pastry brush to paint corn syrup on the top of the cookies. Attach the marshmallow fondant to the cookies.
Use the small paintbrush and the corn syrup as glue to stick some cupcake decorative candies onto the marshmallow fondant.
Brush some corn syrup at the edge of the cookies and dip the cookies into the sprinkles or candy canes to get a nice decorated frame.
Trim the bottom of each front cookie.
Cut support cookies into quarters.
Use royal icing to secure the front cookies and make it stand. Viola! Your 3D cookies are done!