Few foods elicit guilty pleasure like licking the remnants of something sweet and gooey left in a mixing bowl.
With a stand or hand blender, beat vegan butter until light and creamy. Slowly add in the powdered sugar and blend till combined. Add in cocoa powder, vanilla and melted chocolate chips. Blend to combine and add non-dairy milk a little at a time to achieve soft, spreadable consistency. (*Melt chocolate chips in a microwave or in a double-boiler, then let cool slightly before using.)