For those with food allergies and/or children who are hyper sensitive to artificial dyes, you can whip up the perfect vegan buttercream frosting in less than 10 minutes, with only 4 basic ingredients! Pictured using natural blue plant-based food dye.
In a medium mixing bowl with electric beaters (or using a stand mixer), cream together softened vegan butter and vanilla for 1 minute. Butter should be smooth, not clumpy or runny.
Keeping the mixer going on low speed, slowly (and carefully!) add in powdered sugar, as well as sky blue powder if using. Add in plant-based milk one tablespoon at a time. Keep mixer going on medium speed, until you get that nice, fluffy texture of buttercream frosting (taste testing mandatory!).
Use immediately on completely cooled cakes and cupcakes for best results. This will cover an 8-inch round cake (or 24 cupcakes), but if for some reason you have any leftovers, you can store it in an air-tight container for up to one week. Stored frosting may need to sit on countertop to "defrost" for a few minutes before using.
Notes
Check out the options in-post for recommendations on cakes to frost with this vegan buttercream!