Step 1

In a large mixing bowl or the bowl of a stand mixer with the paddle attachment, cream your butter on low speed until lighter in color and smooth, then turn off mixer.

Step 2

Add all the powdered sugar and mix on low speed until completely incorporated. Turn off mixer.

Step 3

Add in your vanilla and aquafaba and mix on medium high for five to ten minutes, until your preferred level of fluffiness has been achieved. Keep in mind that the fluffier it gets, the less weight the buttercream will be able to hold. I usually go about five minutes.

Step 4

Mix on low/stir speed for five minutes to get rid of bubbles.