THat's right. Just soften butter and crumble any blue cheese into it. Mix, form it into a presentable shape and chill or freeze.
Compound butters are usually shaped into a roll like a sausage. Place the mixture onto a sheet of wax or parchment paper and roll it up and twist the ends tight.
"If you want to make an apple pie from scratch, you must first create the universe." -Carl Sagan