Answer: Oooh, great question! Yes! They are interchangeable, with a few caveats. We’ll get to those in a second. But first, just because they’re interchangeable, that doesn’t make them the same. Brown sugar is made up of refined white sugar with molasses added to it. Molasses has an intense, rich flavor that’s caramel-like. The color of brown sugar is determined by the amount of molasses it contains. The more molasses, the darker the sugar. Make sense? Dark brown sugar has twice the molasses of its lighter counterpart.
And here come the caveats. In baking, swapping light brown sugar when the recipe calls for dark brown sugar may produce lighter product with a less rich taste. The more brown sugar called for in the recipe, the more the taste will be affected by the swap. Molasses is also a little acidic (and reacts with alkaline baking soda) so you could see cookies that spread a little more during baking. Making cookies for the kids? Use what you’ve got on hand. Those tastebuds won’t notice the difference. But if you’re baking for a special occasion, you’ll want to use the same sugar called for in the recipe.
Hope this helps! Enjoy! ❤️
xoxo,
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