Substitute for Light Brown Sugar in Baking: Easy Fix

A reliable substitute for light brown sugar is granulated sugar mixed with unsulfured molasses: use 1 tablespoon of molasses for every 1 cup of sugar. It takes only a few minutes and gives cookies, cakes, and other bakes the color, moisture, and mild caramel flavor that a straight swap with white sugar would miss.

Ingredients

1 cup (200 g) granulated white sugar
1 tablespoon (15 ml; about 20 g) unsulfured light molasses, not blackstrap

This amount makes roughly 1 cup of homemade light brown sugar, enough to replace 1 cup of packed light brown sugar in most baking recipes. The finished mixture may weigh a little more than a cup of packaged brown sugar, so use the recipe’s measurement method when you add it: measure it as a packed cup if the recipe calls for packed brown sugar, or weigh it if the recipe gives a weight. If your recipe specifies a weight, use that exact weight of the finished substitute rather than automatically adding the whole batch.

Instructions

Check the molasses. Measure 1 tablespoon (15 ml) of unsulfured light molasses. Light or mild molasses gives the gentle flavor associated with light brown sugar. Avoid blackstrap molasses, which is more bitter and assertive. If your molasses is very thick, stir it briefly so it is easier to measure and blend.
Combine with the sugar. Put 1 cup (200 g) of granulated sugar in a medium bowl. Add the molasses and use a sturdy fork or flexible spatula to work it through the sugar. Scrape the sides and bottom as you mix so no dark streaks of molasses remain in one spot.
Break up clumps. Continue mixing for about 2 minutes, pressing any clumps against the side of the bowl. The mixture is ready when it is evenly tan and looks like fine, slightly damp sand. If you see pale patches or sticky lumps, keep stirring and rubbing them apart; uniform distribution helps the substitute behave consistently in the batter.
Measure for your recipe. Use the homemade sugar right away, packing it into the measuring cup when the baking recipe asks for packed brown sugar. For recipes written by weight, weigh the amount called for. This batch is a practical one-cup replacement, but a scale gives the closest match when a recipe is weight-based.

Tips

Choose the right molasses. Unsulfured light molasses is the best match for light brown sugar because it adds mild caramel notes without dominating the bake. Regular unsulfured molasses sold for cooking is usually suitable. Blackstrap has a stronger, more bitter taste and can make delicate cookies or cakes taste noticeably different.
Pack the cup when the recipe says to. Brown sugar is commonly measured firmly packed, while granulated sugar is not. After mixing, press the substitute into the cup with the back of a spoon and level the top. If the recipe gives grams instead, weighing is more dependable than trying to convert between packed and loose cups.
Mix thoroughly before adding wet ingredients. Molasses is sticky and can cling to the bowl or utensil. Blend until the color is even, especially if the recipe relies on creaming sugar with butter. Unmixed streaks can leave some bites darker and sweeter than others.
Do not add extra liquid to compensate. The molasses is already part of the substitute. Adding more syrup, milk, or water can throw off the balance of a dough or batter. If the finished dough seems different, follow the recipe’s cues for texture rather than changing several ingredients at once.

Serving Suggestions

This is a baking ingredient rather than a finished dish, so use it wherever a recipe calls for light brown sugar. It works especially well in chocolate chip or oatmeal cookies, blondies, quick breads, muffins, spice cakes, and crumble toppings. The molasses brings a mild toffee-like note and helps retain some of the soft, moist quality associated with brown sugar.

For cookies, mix the substitute into the butter and sugar as directed; if the recipe calls for creaming, continue until the mixture looks cohesive, but do not assume that extra beating will make it identical to packaged brown sugar. In muffins and quick breads, whisk it with the other dry ingredients if that is the recipe’s method, or dissolve it with the wet ingredients when instructed. For a streusel or crumble, work it into the butter and flour until the topping forms the texture described in the recipe.

It is also useful in sauces or glazes that need a small amount of light brown sugar, though this mixture is designed primarily for baking. If a recipe depends on a specific syrupy texture, taste, or precise sugar concentration, the best choice is to use the ingredient specified rather than assuming a homemade substitute will be identical.

Variations

Make a smaller amount. For ½ cup (100 g) granulated sugar, mix in 1½ teaspoons (7.5 ml; about 10 g) light molasses. For ¼ cup (50 g) sugar, use ¾ teaspoon (3.75 ml; about 5 g) molasses. These smaller batches are handy when you only need a little for a topping or a small recipe. Mix carefully, since tiny quantities can take a little longer to distribute evenly.

Make a darker, stronger version. To approximate dark brown sugar, increase the molasses to 2 tablespoons (30 ml; about 40 g) per 1 cup (200 g) granulated sugar. This produces a deeper color and more pronounced flavor, so it is not the best choice when the recipe specifically calls for light brown sugar. Keep the same sugar-to-molasses ratio throughout a batch rather than varying it by eye.

If you do not have molasses. Granulated sugar can replace light brown sugar in many recipes at a 1:1 volume ratio, but the result will generally be paler, less moist, and less caramel-flavored. Cookies may spread or turn crisp differently, and cakes may have a slightly different crumb. This simple swap is more suitable for recipes where brown sugar is not the main flavor or texture driver.

Other syrups are not exact replacements. Maple syrup and honey can add sweetness and flavor, but both are liquid and cannot be stirred into granulated sugar as a direct stand-in for molasses. Swapping them into a baking recipe may change how wet the batter is, how quickly it browns, and how it sets. Use them only when you are prepared to adjust the recipe, or choose a recipe written for that syrup. Coconut sugar can sometimes replace brown sugar by volume, but it has a different flavor and does not supply the same molasses moisture.

Storage and Reheating

For the most predictable texture, make only as much as you need and use it promptly. If you have extra, transfer it to a clean, dry, airtight container and keep it in a cool cupboard for up to 2 to 3 months for best quality. Label it with the date and mark it as light brown sugar so it is not mistaken for plain granulated sugar. Because the ingredients are shelf-stable and the mixture is a dry baking ingredient, refrigeration is not necessary and may make it firm or clumpy.

If the stored sugar has formed small clumps, break them apart with a fork or rub them between clean fingertips before measuring. If it has become very hard, it may be easier to make a fresh batch; do not add water directly to the container, since added moisture can encourage spoilage. Discard it if it develops an unusual odor, visible mold, or signs that moisture or food residue got into the container. This substitute is not a cooked leftover and does not need reheating.

Frequently Asked Questions

What is the best substitute for light brown sugar in baking?

Granulated sugar mixed with unsulfured light molasses is the closest easy substitute: combine 1 cup (200 g) sugar with 1 tablespoon (15 ml) molasses. It restores much of brown sugar’s color, mild caramel flavor, and moisture. A direct swap with white sugar is convenient, but it will not give the same flavor or texture.

Can I use dark brown sugar instead of light brown sugar?

Usually, yes. Dark brown sugar contains more molasses, so the finished bake will be darker and have a stronger flavor. The difference is often subtle in a heavily spiced cake or rich cookie, but it may stand out in a delicate cake or a recipe where the mild flavor of light brown sugar matters.

Can I use blackstrap molasses to make this?

It is possible, but it is not the recommended choice for a close light brown sugar substitute. Blackstrap tastes more intense and bitter than light molasses, and its flavor can take over a mild dough or batter. Use unsulfured light molasses for the recipe above; if blackstrap is all you have, consider the straight granulated-sugar swap instead of risking an unwanted flavor.

Will this substitute work in cookies and cakes?

It works in most standard cookie and cake recipes that call for light brown sugar, including recipes that measure the sugar by volume or weight. Expect some variation because brands and recipes differ in how much moisture and molasses flavor they rely on. For recipes with a very delicate crumb, a precise formula, or brown sugar as the defining flavor, using the specified sugar gives the most predictable result.

Can I make the substitute ahead of time?

Yes. Mix it in advance and store it in an airtight container in a cool, dry cupboard for up to 2 to 3 months for best quality. Break up any clumps before measuring, and keep the container free of water, damp utensils, and crumbs. For the freshest texture, making a batch shortly before baking is simple and takes only a few minutes.

More recipes to cook

Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

Spotted an error? Tell us and we will correct it (corrections policy).