Hi there, Dina! Because this recipe includes a merigue we wouldn't suggest making it with sugar substitutes. While we don't test our recipes using sugar substitutes, experimentation can be one of the most fun parts of baking. If you're down for a little adventure and are open to the unexpected, you could give our Quick Buttercream Frosting recipe a try! We recommend starting with substitution instructions from the substitute's package or the manufacturer's website since a swap won't always be 1-for-1. If you're curious, we have a couple blog articles that we think you'll find interesting. The first was one of our earliest articles and in it we tested some of our favorite recipes using Splenda in place of sugar: https://blog.kingarthurflour.com/2008/01/14/searching-for-sweetness-chapter-1/ The second shares sugar alternatives that we'd had a spread about in Sift Magazine: https://blog.kingarthurflour.com/2017/09/20/sugar-alternatives/ Happy experimenting! Morgan@KAF

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