Hi T.R.! Yes, just as you can make confectioners’ sugar out of granulated sugar and cornstarch (see the Ask Betty question about that), you can whirl 1 cup Splenda sugar substitute with about 1 tablespoon cornstarch in a blender to make a sugar-free confectioners’ sugar. You can use this powdered sugar in whipped creams and frostings, but remember that it is twice as sweet as regular sugar, so use less. I would also be reluctant to use it in baked goods, as the treat may not rise or brown, or have the same texture or structure, as those baked with regular sugar. But you can certainly experiment to see what works. And be sure to check out the Splenda website for more information about baking with Splenda.