If you're out of brown sugar and need some for a recipe, you can make some yourself with granulated sugar and molasses. Here's how!
1lbsugar(about 2 cups)
Place molasses in the bottom of a large mixing bowl, and dump in the sugar. Use a hand mixer to stir things around until the molasses is evenly distributed (you could also do this in a food processor). First it will start out all clumpy, and after you mix for a few minutes, those clumps will start to disappear. Keep mixing until the clumps have all been broken up and the molasses has been evenly distributed.
Store in an airtight container. The brown sugar is now ready for use!