Use the same approach when substituting molasses: replace the sugar with an equal amount of molasses by volume (e.g., for 1 tablespoon of sugar, use 1 tablespoon of molasses). Substitute 1 cup white sugar and 2 teaspoons molasses for every cup of light brown sugar the recipe calls for. If it calls for dark brown sugar, up the molasses to 1 tablespoon per cup of white sugar. Typically, light brown sugar consists of 3.5 percent molasses blended with 96.5 percent sugar. Brown sugar is actually a combination of granulated sugar and molasses, so it's a good substitute for molasses. 2. Overall, molasses makes a fine replacement for refined sugar, but its consumption should be limited, as it’s still a form of sugar. Light brown sugar consists of refined white sugar to which molasses has been added to give it color, moisture and flavor. If you have a bottle of the real stuff at home, use it in place of molasses. While measurements may vary per recipe, you can generally replace 1 cup molasses with 3/4 cup packed brown sugar. The liquid left behind after sugar crystals are removed is molasses!. To make white sugar, cane or beet juice must be boiled to create crystals and remove impurities. White granulated sugar and maple syrup. SUMMARY. Those factors make a combination of the two the easiest turbinado sugar substitute to implement. Dark brown sugar will have a stronger molasses flavor than light brown sugar.