Using the side of a knife, smash the cloves of garlic to remove the skins, then finely chop them.
Finely chop fresh herbs and with blue cheese, garlic, red pepper flakes and salt to bowl of butter. Use a silicone spatula or wood spoon to mix and combine ingredients..
At this point, the butter can be used as-is over cooked vegetables or as a spread for warm bread or rolls. To use as a compound butter, continue with the following steps.
Transfer the steak butter mixture onto sheet of wax paper, approximately 1 inch in from a long edge.
Using your hands, form butter into a cylindrical shape, then wrap it up, using the wax paper to hold the mixture together. Twist the paper on both ends of butter and refrigerate until firm.
Remove from refrigerator, unroll and slice into pieces to top steak.
Roll up and refrigerate or freeze any remaining compound butter.