Light Brown Sugar (Best Option)
1:1 by volumeLight brown sugar contains molasses, which adds moisture and a slight acidity that interacts with baking soda or powder to improve texture and rise. This makes the brownies softer and chewier compared to granulated sugar.
To use light brown sugar successfully, pack it lightly to avoid adding too much moisture. Watch for slightly darker coloration and richer aroma during baking.
Compared to granulated sugar, light brown sugar produces brownies with a deeper flavor profile and a more tender, moist crumb, which is often preferred in fudgy brownie recipes.