I need to make 140 cupcakes on Saturday all with buttercream flowers piped on!

So the cakes stay as fresh as they can be, has anyone ever piped buttercream straight onto a frozen cupcake before? So it will be defrosted and at its freshest by delivery.

Thank you!

Yes, you can definitely do this, I do it all the time. It will actually help you if they cupcakes are frozen if you are piping flowers with buttercream on the tops, because the cake part is not squishy. Good luck!