This is so simple to do. Let two sticks of butter soften. Chop 2-3 tablespoons of your favorite herbs. Combine thoroughly. Scoop the mixture out onto wax paper. Use the wax paper to roll the butter into a log. Wrap the log in plastic wrap and refrigerate. You're done.
It looks nice on a butter dish on the table. Slice it into portions you can rub onto ears of corn. Cut it into cubes and stuff a lamb burger with it. I could go on all day, really. Just make this and enjoy it.