n a large mixing bowl, whip the sugar and butter, and SLOWLY (see note) add the strawberry puree until you reach the desired consistency. If you want it really thick and stiff, add less. If you want a thinner frosting, add more. Just be sure to add the puree slowly.
Store in an airtight container in the refrigerator for up to a week. Let it come to room temperature before using.
Notes
The Nutrition Facts are an estimate only.Add the strawberry puree slowly. Depending on the moisture content in the sugar and the brand of vegan butter you use, a little puree can go a long way. If you add too much and it's too thin, add more sugar until you get the consistency you're looking for.