White Sugar + Molasses (Best Option)
1 cup white sugar + 1 tablespoon molasses per 1 cup brown sugarBrown sugar is essentially white sugar with molasses added, which provides moisture, acidity, and a rich caramel flavor crucial for sugar cookies. By mixing white sugar with molasses, you recreate these properties, ensuring the dough maintains its structure and the cookies retain their characteristic chewiness and flavor.
For best results, thoroughly mix the molasses into the white sugar until evenly distributed to avoid clumps and ensure uniform moisture. Use light or dark molasses depending on desired flavor intensity; light molasses is closer to light brown sugar.
This substitute yields sugar cookies nearly identical to those made with brown sugar, preserving both texture and flavor complexity, making it the most reliable replacement.