Granulated Sugar Substitute for Confectioners Sugar

Confectioners Sugar substitute

Homemade Powdered Sugar

Use 1 cup confectioners sugar for every 1 cup granulated sugar + 1 tsp cornstarch

Best for frosting

To substitute granulated sugar for confectioners sugar, blend 1 cup granulated sugar with 1 tsp cornstarch in a food processor until very fine (1-2 minutes). This creates homemade powdered sugar that works exactly like confectioners sugar in all recipes.

Compare all 5 confectioners sugar substitutes

Learn how to substitute granulated sugar for confectioners sugar in recipes. Complete guide to converting regular sugar to powdered sugar for baking and frosting applications.

Other confectioners sugar substitutes

Ranked, with the exact amount to use

2Granulated Sugar (Direct)
Use the same amount
Regular granulated sugar can be used directly in some baking recipes where the sugar will dissolve completely, but it won't work for frostings or dusting applications.
What changes
Best for
baking, cookies, cakes, when texture isn't critical, when sugar dissolves completely
Taste
identical sweetness
Texture
granular, may be gritty
Won't work for dusting or smooth frostings, only for baking where sugar dissolves completely
3Superfine Sugar
Use the same amount
Superfine sugar is finer than regular granulated sugar but not as fine as confectioners sugar.
What changes
It works better than granulated in some recipes but still won't work for frostings.
Best for
baking, cookies, cakes, when you need finer texture than granulated, when sugar dissolves completely
Taste
identical sweetness
Texture
finer than granulated but still granular
Finer than granulated but not as fine as confectioners, better for some applications than regular granulated
4Caster Sugar
Use the same amount
Caster sugar is finer than regular granulated sugar and works better in some baking recipes, but it still won't work for frostings or dusting applications.
What changes
Best for
baking, cookies, cakes, when you need finer texture than granulated, when sugar dissolves completely
Taste
identical sweetness
Texture
finer than granulated but still granular
Finer than granulated, similar to superfine, better for baking than regular granulated sugar

How it behaves in this recipe

Converting granulated sugar to confectioners sugar requires grinding it into a fine powder and adding cornstarch to prevent clumping. This is essential for applications like frosting and dusting where the fine texture is crucial. Direct substitution with granulated sugar only works in baking where the sugar will dissolve completely.

Cooking tips

For the best results, always make homemade powdered sugar by blending granulated sugar with cornstarch
Blend the sugar and cornstarch for at least 1-2 minutes to ensure it's fine enough for frosting
Regular granulated sugar won't work for frostings or dusting - it will create a gritty texture
Superfine and caster sugar work better than regular granulated in baking but still won't work for frostings
When making homemade powdered sugar, sift it before using to remove any remaining lumps
Store homemade powdered sugar in an airtight container to prevent clumping
For royal icing, you must use powdered sugar or homemade powdered sugar - granulated won't work
When dusting desserts, only powdered sugar or its substitutes will work - granulated will be too gritty
For cream cheese frosting, powdered sugar is essential for smooth texture - granulated will be lumpy
If you only have granulated sugar, make homemade powdered sugar rather than using it directly

Notes on confectioners sugar

Make homemade powdered sugar by blending granulated sugar with cornstarch for the best results
Use superfine or caster sugar for baking applications where you need finer texture than granulated
For frostings and dusting, you must use powdered sugar or its substitutes - granulated won't work
Consider using powdered erythritol or monk fruit as alternatives to confectioners sugar
For royal icing, only powdered sugar or homemade powdered sugar will work properly

Frequently asked questions

Can I use granulated sugar instead of confectioners sugar?

It depends on the application. For baking where sugar dissolves completely, yes. For frostings, glazes, or dusting, no - you need the fine powder texture of confectioners sugar.

How do I make confectioners sugar from granulated sugar?

Blend 1 cup granulated sugar with 1 tsp cornstarch in a food processor for 1-2 minutes until very fine. This creates homemade powdered sugar that works exactly like confectioners sugar.

Why doesn't granulated sugar work for frosting?

Granulated sugar won't dissolve properly in frosting and will create a gritty, unpleasant texture. Confectioners sugar dissolves instantly, creating smooth, spreadable frosting.

Can I use superfine sugar instead of confectioners sugar?

Superfine sugar is better than regular granulated for baking, but it still won't work for frostings or dusting. You need the fine powder texture of confectioners sugar for these applications.

What's the difference between granulated and confectioners sugar?

Confectioners sugar is granulated sugar that's been ground into a fine powder and mixed with cornstarch to prevent clumping. This fine texture is essential for frostings and dusting applications.

Granulated Sugar Substitute for Confectioners Sugar

Other confectioners sugar substitutes

2Granulated Sugar (Direct)

3Superfine Sugar

4Caster Sugar