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Home - Cooking - Substitutes

Latest Updated: Feb 28, 2026 by Andrew Gray

Sweeten Recipes: 5 Best Caster Sugar Substitutes

The closest alternatives to Best Caster Sugar are Granulated Sugar, Powdered Sugar, Brown Sugar, Raw Sugar, and Muscovado Sugar.

Granulated Sugar

Granulated sugar, also known as table sugar, is a type of sugar that has a coarse texture and is typically used in baking.

For cooking, Powdered Sugar also works well - adjust the amount to taste.

Finding the perfect substitute can feel like a puzzle, but it's totally doable.

Here are the top caster sugar alternatives that can save your baking day.

Because, let's face it, sometimes the pantry isn't as stocked as we thought.

These swaps aren't just second best; they can bring their own unique twist to recipes, making your treats even more special.

Ready to transform your baking game?

Table of Contents

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  • The 5 Best Substitutes for Caster Sugar
    • 1 - Granulated Sugar
    • 2 - Powdered Sugar
    • 3 - Brown Sugar
    • 4 - Raw Sugar
    • 5 - Muscovado Sugar
  • Frequently Asked Questions

The 5 Best Substitutes for Caster Sugar

If you're out of caster sugar or don't like the taste, there are plenty of substitutes that will work in their place.

Here are the five best substitutes for caster sugar.

1 - Granulated Sugar

granulated sugar Save for Later!

Granulated sugar, also known as table sugar, is a type of sugar that has a coarse texture and is typically used in baking.

While it can be used interchangeably with other types of sugar, such as caster sugar, it may not produce the same results.

Granulated sugar, on the other hand, may not dissolve as quickly and can add a bit of crunch to baked goods.

When substituting granulated sugar for caster sugar, you may want to consider whether or not the texture of your final product will be affected.

In some cases, such as when making meringues or macarons, using granulated sugar may be necessary to achieve the desired results.

However, in other cases, such as when making cakes or cookies, you may find that caster sugar produces a more desirable texture.

2 - Powdered Sugar

powdered sugar Save for Later!

If you're looking for sugar that will dissolve quickly and create a smooth texture, then powdered sugar is the way to go.

Sometimes called confectioners' sugar or icing sugar, this type of sugar is made by grinding down caster sugar to create a fine powder.

The small grains make it easy to work with, and it's often used in icings, frostings, and other sweet toppings.

It's also a good choice for baking, as it can help to create a light and fluffy texture.

If you're considering substituting powdered sugar for caster sugar, keep in mind that you'll need about twice as much to get the same sweetness.

In addition, powdered sugar tends to absorb moisture, so it's not the best choice if you're looking for a crisp finish.

However, it's ideal for creating smooth, silky desserts.

3 - Brown Sugar

brown sugar Save for Later!

Brown sugar is a type of sugar that is typically produced by adding molasses to white sugar.

The resulting product has a characteristic brown color and a slightly sticky texture.

While brown sugar is not necessarily healthier than white sugar, it does have some unique properties that make it worth considering as a substitute for caster sugar.

For one thing, brown sugar is more hygroscopic, meaning that it absorbs moisture from the air more easily.

As a result, baked goods made with brown sugar are often moister and more flavorfully than those made with white sugar.

Also, the molasses in brown sugar add depth and complexity of flavor that can enhance recipes like cookies, cakes, and pies.

Even if you don't typically bake with brown sugar, it's worth keeping a bag on hand for when you want to add a little extra sweetness to your favorite dishes.

4 - Raw Sugar

raw sugar Save for Later!

And while there are many different types of sugar available, raw sugar is one of the most popular options.

Raw sugar is made from sugar cane that has been crushed and then evaporated.

As a result, it has a coarse, granulated texture that can add a touch of flavor and texture to baked goods.

While raw sugar can be used in any recipe that calls for sugar, it is particularly well-suited for recipes that call for caster sugar.

Caster sugar is finer than raw sugar, making it easier to dissolve.

However, the substitution of raw sugar for caster sugar can add a bit of extra flavor and texture to your baked goods.

So if you're looking for a way to add a little something extra to your next batch of cookies, consider using raw sugar instead of caster sugar.

5 - Muscovado Sugar

muscovado sugar Save for Later!

Muscovado sugar is a type of unrefined sugar that has a dark brown color and a moist, soft texture.

It is made from sugar cane juice that has been crystallized and then dried.

Muscovado sugar contains more molasses than other types of sugar, giving it a deeper flavor.

It can be used as a substitute for caster sugar in baking recipes.

When substituting muscovado sugar for caster sugar, you may need to reduce the amount of liquid in the recipe because muscovado sugar is moister.

You may also want to bake your goods for a longer period of time because muscovado sugar will take longer to dissolve.

However, the end result will be a richer, more flavorful cake or cookie.

Frequently Asked Questions

What is the best substitute for Best Caster Sugar?

Granulated Sugar, Powdered Sugar, Brown Sugar, Raw Sugar, and Muscovado Sugar. Use it at a 1:1 ratio in any recipe that calls for Best Caster Sugar.

What can I use if I run out?

Yes, and the results are often hard to tell apart. Granulated Sugar is the go-to replacement.

For variety, Powdered Sugar adds its own twist to the dish.

Can you combine two substitutes for a closer match?

Sometimes. Blending two partial substitutes - one for flavor and one for texture - gets closer to the original.

This works best when neither alone fully replicates what you need.

Can the substitute be used raw as well as cooked?

Not always. Some substitutes are processed or have a strong raw flavor that disappears with heat.

Check whether the original is typically used raw before assuming the substitute will work the same way.

Explore more: This post is part of our Ingredient Substitutes Guide.
Andrew Gray

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Restaurant industry veteran sharing real recipes, honest substitutes, and tips that actually work in a home kitchen.

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