Best Substitutes for Powdered Sugar
You can make powdered sugar at home from granulated sugar in a blender.
Best overall swap
Granulated sugar + cornstarch (blended)
1 cup sugar + 1 tbsp cornstarch, blend until fineBlend on high for a minute or two until powder-fine; the cornstarch prevents clumping just like store-bought.
All Substitutes for Powdered Sugar
Granulated sugar + cornstarch (blended)
1 cup sugar + 1 tbsp cornstarch, blend until fineBlend on high for a minute or two until powder-fine; the cornstarch prevents clumping just like store-bought.
Granulated sugar (for baking, not frosting)
1:1 by weightFine for recipes where the sugar dissolves during baking, but won’t work for a smooth glaze or frosting.