Powdered sugar substitute
1 cup powdered sugar = 1 cup granulated sugar + 1 tablespoon cornstarch, blended
Powdered (confectioners') sugar is granulated sugar ground fine with a little cornstarch. A blender does the job.
Substitutes for 1 cup powdered sugar
Option 1
1 cup granulated sugar + 1 tablespoon cornstarch, blended
Blend for 1–2 minutes until it is a fine powder. Wait a minute before opening the blender, as the dust settles.
Amounts are for a US recipe. Need to convert them? See cups to grams.
Questions
What can I use instead of powdered sugar?
For 1 cup powdered sugar, you can use 1 cup granulated sugar + 1 tablespoon cornstarch, blended.
What is the best substitute for powdered sugar?
For most recipes, use 1 cup granulated sugar + 1 tablespoon cornstarch, blended. Blend for 1–2 minutes until it is a fine powder. Wait a minute before opening the blender, as the dust settles.
Anything to watch for when swapping powdered sugar?
This works well for dusting and for icing. It is slightly grittier than store-bought powdered sugar, so sift it.