Prepare cake mix following the recipe on box for cupcakes. Bake as directed and cool completely.
Fit a frosting bag with a star tip and fill with buttercream frosting. Frost the cupcakes, beginning at an outer point and spiral inward.
Cut the twizzlers into 3 inch sections. Pour the sprinkles into a small dish. Gently pull apart the top half of a twizzler section and moisten the ends with water. Dip the ends in the sprinkles. Push the other end into the center of a cupcake and gently arrange the ‘sparklers’.
Buttercream frostingBeat butter and powdered sugar together with hand or stand mixer. Mix in vanilla. Add whipping cream 1 TBS at a time until frosting reaches desired consistency.