homemade powdered sugar in a bowl next to a small pile of granulated sugar
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Homemade Powdered Sugar

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Did you know you can make powdered sugar at home? This homemade powdered sugar recipe is awesome and super easy to make using just two ingredients.

Whether you ran out of confectioner’s sugar, icing sugar, or powdered sugar, whatever you want to call it, or you just really enjoy making your own ingredients at home, this recipe is for you.

You can use this homemade powdered sugar just like you would store bought kind. Use it in frosting, icing, glaze, baking, etc. It is so simple to make, if I can do it, you can do it. Let’s get started!

Step 1: Gather the ingredients

Granulated sugar in a glass bowl next to a small bowl of cornstarch and a food processor.

In order to make powdered sugar at home you just need two ingredients:

  • White granulated sugar
  • Cornstarch


You will also need a food processor or strong blender.

Step 2: How to make homemade powdered sugar

Hand pouring white granulated sugar into a food processor to make homemade powdered sugar

Add the granulated sugar and cornstarch to your food processor or powerful blender. The ratio is for every one cup of white granulated sugar you use 1 tablespoon of cornstarch.

Technically you can make homemade powdered sugar with just white granulated sugar. The cornstarch is added to keep the sugar dry after becoming powdered. Which will extend the self life of it.

Put the lid on and blend on medium and then high for about a minute. Most likely you will see some sugar dust coming out of the food processor which is perfectly normal.

At this stage, if you check it you will notice the sugar is getting super fine but will still be slightly gritty to the touch. It will resemble caster sugar. If you have a recipe that calls for superfine sugar or caster sugar, you can use this.

Step 3: Finished up the powdered sugar

Replace the lid and keep blending. I normally alternate between the two speeds on my food processor for 30 seconds a piece, but it really doesn’t matter. Keep blending and checking until the sugar turns powdery.

It will wind up taking 5 to 6 minutes total. Once done you will have homemade powdered sugar, icing sugar, confectioner’s sugar, that you can use for all your frosting, icing, glaze, baking, needs. Super easy right? Enjoy!

How to store homemade powdered sugar?

Place the sugar in a ziplock bag and store in the pantry. It will last for a few years.

homemade powdered sugar in a bowl next to a small pile of granulated sugar
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5 from 5 votes

Homemade Powdered Sugar

If you run out of powdered sugar, icing sugar, confectioner's sugar, never fear you can easily make it at home with just two ingredients. Use it for all your frosting, icing, glaze, and baking needs. It is so easy to make at home! If I can do it, you can do it.
Prep Time5 minutes
Total Time5 minutes
Course: Ingredient
Cuisine: American
Keyword: easy, powdery
Servings: 4 servings
Calories: 105kcal


  • Food processor or powerful blender


  • 1 cup white granulated sugar 200g
  • 1 tbsp cornstarch 8g


  • Add both the white granulated sugar and the cornstarch to the food processor or blender. Replace the lid and blend away. After a while the sugar crystals will get finer and finer.
  • Keep blending and checking the sugar until it becomes powdery. I generally alternate between high speed and medium speed every 30 seconds, but that doesn't really matter. There you have it, homemade powdered sugar.
  • Use this homemade powdered sugar just like you would storebought. Enjoy!


How to Make Powdered Sugar | Homemade Powdered Icing Confectioners Sugar Recipe


The nutritional facts are based on using a 1/4th cup of powdered sugar as a serving. It will vary depending on how much you use.
List of ingredients for homemade powdered sugar
Tried this recipe?Mention @WPRecipeMaker or tag #wprecipemaker!


Calories: 105kcal

Do you like this recipe? Please give it a rating and comment down below, I really appreciate it.  If you make it tag me on Instagram @inthekitchenwithmatt. Also, sign up for the newsletter so you won’t miss out on any of my new posts and recipes.

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Homemade powdered sugar pin for Pinterest
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  1. 5 stars
    I love how detailed you provided the information & steps.Very useful tips& recipe.I will certainly try this

  2. 5 stars
    Used it in a cookie recipe that called for powdered sugar, and they turned out great. It will be handy for those times I don’t realize till the last minute that I’m out of powdered sugar and don’t want to run to the store!

  3. 5 stars
    Awesome! There have been so many times I’ve needed powdered sugar and was out of it – so happy I can make my own now!

  4. 5 stars
    Wow! Who knew that I could make my own powdered sugar. It was so easy and turned out just like store bought. Thanks for this recipe!

  5. 5 stars
    This is so good to know. I’m allergic to cornstarch and often have difficulty finding a powdered sugar with another type of starch. So, question, I could use this recipe and just swap in tapioca starch, right? Do you think I could use potato starch? I already have a bag of that in my pantry.

    • Hi there, Teresa! You can leave the cornstarch out, the self-life won’t be as long, but if you are going to use it right away, that won’t be a problem. I haven’t tried with tapioca or potato starch, but those will probably work as well. πŸ™‚ πŸ™‚

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