White Sugar and Molasses (Best Option)
1 cup white sugar + 1 tablespoon molasses per 1 cup brown sugarBrown sugar is essentially white sugar with molasses added back in, which provides moisture and a rich caramel flavor important for chocolate chip cookies. By mixing white sugar with molasses, you replicate the hygroscopic properties that keep cookies soft and chewy.
For best results, thoroughly blend the molasses into the white sugar to ensure even moisture distribution. Adjust slightly if you prefer darker or lighter brown sugar by varying molasses quantity.
Cookies made with this substitute will have nearly identical texture and flavor to those made with brown sugar, maintaining chewiness and the classic caramel undertones expected in chocolate chip cookies.