Many people keep sticks of butter at room temperature, so the butter is easily spreadable at a moment’s notice. But over time, the oils in butter can go rancid. If you keep butter refrigerated, it should last at least two weeks past the expiration date after you open it. And to extend the life of butter even longer, freeze it: It’ll last almost nine months. To soften butter to room temperature, microwave it for 15 seconds at 30 percent power. It’ll be soft and spreadable in seconds.
ANDREWS MCMEEL SYNDICATION