confectioners' sugar

US /kənˈfek.ʃən.ərz ˌʃʊɡ.ər/
UK /kənˈfek.ʃən.ərz ˌʃʊɡ.ər/
"confectioners' sugar" picture
1.

finely powdered sugar, used for icing and decorating cakes and pastries

:
Dust the brownies with confectioners' sugar before serving.
The recipe calls for two cups of confectioners' sugar for the frosting.