Combine granulated sugar and corn starch in a blender or food processor.
Blend or process on high until the mixture is fine and powdery. Sift the powdered sugar to remove any lumps and ensure a smooth texture.
Repeat the sifting process a few times (2 to 3 times) to make sure you get rid of any lumps. Store the powdered sugar in an airtight container until needed.
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Notes
Nutrition info is estimated and may vary based on ingredients and portions. For the most accurate details, consider using a nutrition tool or checking our full Nutrition Information Disclaimer.
Nutrition
Calories: 417kcal
Keyword how to make confectioners sugar, how to make powdered sugar