The 4th of July is around the corner so I used a little food coloring to give it a colorful twist -you could do that or add other colors or none at all; just the frosting of your choice.
Step 1: Gather
White frosting in can
Red and Blue food coloring gel
Add a little food coloring (remember to use a clean toothpick to go into the food gel so you don't contaminate it) to 2 little bowls of frosting.
Step 3: Stack
Practice stacking the doughnut halves with one flat half on the bottom and the other half up on top.
Step 4: Stack frosted
Step 5: Frost and Chill
Frost the outside.Put it in the refrigerator to set up for 15 minutes or so- it was 90 degrees in the kitchen when I made mine so it was pretty goopey.