2 tablespoons vegan shortening
2 tablespoons vegan butter
about 2-6 cups powdered sugar
soymilk, as needed
This is my standard, easy frosting. It isn't idiot proof, since I don't measure, but there is an easy "method" to it. It is rich like "fattier" frostings, but without the gallons of solid fat going in.
Start by putting your shortening and butter spread in a large bowl. Let them sit for a bit to soften. Add a splash of vanilla (can use other flavors if you want) and about 2 cup of powdered sugar. Mix, using a hand mixer, until the mix is pretty crumbly and the fats aren't big chunks anymore.
At this point, you want to smooth the frosting out. Be careful - it doesn't take a lot of liquid to do this! Soymilk is a good thing to use, but if you use liquid food colors or want to add more extract, you will want to start with these so that it doesn't get too runny. Add more liquid, about 1 tablespoon or so (a generous splash) and continue mixing. Scrap the bowl down, if needed. At this point you should have a creamy frosting. If it is still too dry, add a touch more soymilk. If too wet, you added too much liquids, so just shake in some more powdered sugar.
If you want more frosting that what this makes, continue to add liquid/powdered sugar, in alternating batches, until you get the amount of frosting you want. I like this because it is easy to make a little or a lot.
Easy! Done. Go frost something.