Place the brown sugar in an airtight container with a slice of bread overnight
Place the brown sugar in an airtight container with a damp paper towel for a few hours
Microwave the brown sugar with a damp paper towel in short bursts
Warm the brown sugar in a low oven for a few minutes
Store brown sugar in an airtight container with a terra cotta sugar saver
Break up the hardened sugar with a fork before using
Add a few apple slices to the container overnight
Use a food-safe moisture absorber designed for brown sugar
Seal the sugar tightly after each use