My father in law swears that his mother used to make the best cherry pie and that she used powdered sugar, instead of granulated sugar, in the filling. Is that possible? Does anyone know of a recipe?

Hi, Lauraemo!

Welcome!

I am full of non-definitive answers these days, and I feel another one coming on, as I am a pie novice.  My thinking is it should work.  It seems like powdered sugar would dissolve well and provide some of the corn starch for thickening. 

However, we have some serious pie bakers here who will know for sure!

—ak

Thanks! I wasnt sure if powdered sugar would make it too sticky. Its his birthday this weekend so I was going to attempt it. Ive made cherry pies before but never with powdered sugar

Make a small 1/2 cup test batch. You can cook it on top of the stove to see how it turns out and the proportions will scale.

oh thats a good idea, thank you!!

That substitution should be fine, it will add a touch more cornstarch (contained in the powdered sugar) to the recipe.  Measure the sugar by weight, as powdered sugar measures differently by volume than granulated.