What can you change caster sugar to in a recipe have more fiber?

You can't directly substitute caster sugar for something with more fiber. Sugar, by its nature, is low in fiber. To add fiber to a recipe, you need to use ingredients that are naturally high in fiber, like:

* Whole grains: Replace white flour with whole wheat flour or oat flour.

* Fruits and vegetables: Incorporate fruits like berries, apples, or bananas, or grated vegetables like zucchini or carrots.

* Nuts and seeds: Add chopped nuts, seeds like chia seeds or flaxseeds, or nut butters.

* Legumes: Use beans, lentils, or chickpeas.

Here's how to adapt a recipe:

1. Consider the recipe's purpose: Will the added fiber impact the texture or taste significantly?

2. Gradually incorporate fiber: Start with a small amount and adjust as needed.

3. Adjust liquid: Some fiber-rich ingredients absorb more liquid, so you may need to adjust the amount in your recipe.

Example:

If your recipe calls for caster sugar in a cake, you could:

* Use a whole wheat flour blend for some of the flour.

* Add chopped dates or dried cranberries for sweetness and fiber.

* Use a tablespoon of ground flaxseed mixed with 3 tablespoons of water as a "flax egg" to bind the batter.

Remember, adding fiber to a recipe can alter the texture and taste, so be sure to experiment and find what works best for you.