Try to use this electric heated butter knife, you will not need to heat your butter in a microwave or with a hairdryer to get it spreaded. Created by British Warburtons, this knife is powered by 2 AA batteries that fit right into the handle. When the knife is activated by a button, it becomes heated and easily cuts through butte. Make sure that the knife is heated up to 41.8 degrees Celsius.
Via dailymail / By Ben on Sun Jul 1 2012