Googled this--they say 3 cups !robynhood said:Hi again, I have a recipe calling for "1 box of powdered sugar"
how much sugar is in 1 box please; ie. how many ounces or grams
the recipe is for home made peanut butter cups and I will post it when I get the measurements; thank you
Michael in FtW said:...1 US cup of powdered sugar is 4-oz, thus 4 cups per 16-oz box. (Ref)