Preheat oven to 350°F. In ... Cool completely before frosting. Cream butter until fluffy. ... cream, and beat for 1 minute, adding more cream ... used with permission. ®
Place the potato starch in ... minutes. Turn this buttercream base into a shallow dish. ... vanilla. Use to frost cakes at room temperature; the frosting will set when chilled. Beat ... Makes 3 1/2 cups.