Z's Yummy Vegan Chocolate Frosting
I came up with this recipe when making a gluten-free, nut-free, soy-free, egg-free, and dairy-free cake for a birthday party.
If no vegan butter alternatives are available you can use non-hydrogenated vegetable shortening. Vegan 'butter' should be the stick form and not the whipped, spreadable tub type.
More powdered sugar can be added to achieve desired consistency. If frosting is refrigerated, it will harden and should be brought to room temperature before serving.