how to soften sugar
A. Granulated sugar will harden when exposed to any type of moisture. Here is an easy way to make hardened granulated sugar soft again -- Preheat oven to lowest temperature, 150-200 degrees. Remove sugar from the package and put in an ovenproof container that will hold the sugar. Place in the warm oven for approximately 15 minutes. Tap sugar with a spoon. If it starts to fall apart, turn oven off and leave sugar in the oven for an hour or two to completely dry out. Always store granulated sugar in an airtight container. Store confectioners sugar in a cool, dry location (not the refrigerator). When it gets moist, it develops lumps.