Gather your ingredients: Make sure you have granulated white sugar and molasses ready.
Measure the sugar: Add 1 cup of granulated white sugar to a mixing bowl.
Add the molasses: Pour in 1 tablespoon of molasses for light brown sugar, or 2 tablespoons for dark brown sugar with a deeper flavor.
Mix thoroughly: Using a fork or whisk, mix until the molasses is fully incorporated and the sugar is evenly colored with no lumps. If the mixture is still lumpy, try using a food processor for a smoother texture. Alternatively, let the mixture sit for a few minutes, then stir again to help dissolve stubborn lumps.
Adjust to taste: Prefer a richer molasses flavor? Add small amounts of molasses and mix well until you reach your desired color and taste.
Store and use: Transfer your homemade brown sugar to an airtight container and store in a cool, dry place.
Notes
Light vs Dark Brown Sugar
Light Brown Sugar: 1 tablespoon molasses per cup of sugar: Mild sweetness, perfect for cookies and muffins
Dark Brown Sugar: 2 tablespoons molasses per cup of sugar: Rich, deep flavor—great for gingerbread, barbecue sauces, and spice cakes
Pro Tips:
For extra-soft, fluffy brown sugar, mix the sugar and molasses in a food processor or stand mixer for 30–60 seconds. This helps evenly distribute the molasses and eliminates stubborn clumps, just like store-bought brown sugar, but better.
If you want a hand-mixed option, a fork works best (better than a spoon!) because it breaks up the molasses more easily.
If your brown sugar ever hardens, toss a slice of bread or a few marshmallows in the container for a few hours to soften it up!