Make sure your butter is at room temperature. Gently put your finger in the butter, check if butter is soft enough, and should hold the shape at the same time.
Transfer this softened butter to a bowl and beat at medium speed using a hand or stand mixer. If you are using a stand mixer, use the paddle attachment. Beat this butter for 4 to 5 minutes or until butter of soft, fluffy, and light in color.
1 cup vegan butter
At this stage, add vanilla extract.
1 or 2 drops vanilla extract
Now, add confectioner sugar in batches, add half amount of sugar, and mix. beat it at medium speed.
1½ cup powdered sugar
After each batch of sugar is well incorporated, turn the mixer at high speed and beat for 10 to 15 seconds to make buttercream more light and fluffy.
Your buttercream is ready, use as required, or store and refrigerate.