If you are making any recipe that calls for softened butter, try one of the following.
Heating the butter in the microwave for 5 seconds will soften butter, However this is a bit of a trial and error method and if you are a few seconds too ling you just end up with a pool of butter.
Using stick butter, grate it on your cheese grater. This cuts up the butter so small that it will be soft and your dish will be great.