This ultra decadent French buttercream sugar free frosting is super silky and rich. Use it on your best sugar-free cakes and sugar-free cupcakes.

French buttercream is a gorgeously smooth magical confection. It's heavenly on cakes and cupcakes. This version is sugar-free and perfect for all of your sugar-free cakes and sugar-free cupcakes. If you or family members are following a low carb or keto diet for health reasons, this is the sugar-free frosting for you.
But, what is French Buttercream" Quite simply, French buttercream is an emulsion of egg yolks, melted hot sugar, and butter. It's very similar to Italian buttercream in method, except that Italian buttercream uses egg whites instead of egg yolks.

Swiss meringue buttercream, the gold standard for cake decorators everywhere, is an emulsion of egg whites, sugar, and butter. It does not call for hot melted sugar in its production. Although Swiss meringue buttercream may be preferred by cake decorators for its stability, but it is not as rich and glorious as a good French buttercream.
It took a little experimentation to make this sugar free frosting a success, but since I like baking and experimenting it was an enjoyable process!
Let's talk about the ingredients for a minute: I used a combination of xylitol and Sukrin Icing Sugar (or Swerve Confectioners) for the sugar free sweeteners. The xylitol melts nicely and resists re-crystallizing when it cools. It was the right substitution for the melted sugar since eryt...