To one cup white sugar add 1 1/2 tablespoons molasses and add to the work bowl of a food processor. Pulse the sugar several times. Scrape down sides and pulse until the molasses is well incorporated.
For Dark Brown Sugar
To one cup white sugar add 4 tablespoons molasses and add to the work bowl of a food processor. Pulse the sugar several times. Scrape down sides and pulse until the molasses is well incorporated.
Notes
A blender can be used instead of a food processor.