This is not a very precise recipe. I have to play with it every year to get it "just right".
2 cups powdered sugar
2 Tbs melted dairy free margarine
1 tsp vanilla
1/4 c dairy free shortening
4 tsp Soy milk
prepared coffee to cut sweetness (optional)
food coloring as desired
I use my Kitchen Aid Stand Mixer to stir this up. You want it to be smooth and spreadable. It will take about 5 minutes of beating to get the right consistency. Yield: frosts approximately 75 cookies
Add the coffee a little at a time and taste test to your desired sweetness (that's the fun part!).
We found that with the food coloring it's best to just make the given colors of red, yellow, and blue, and green first. Then take what you need from each to make orange, purple, etc.