Make the butter in advance by combining the softened butter, crumbled blue cheese, chopped fresh chives, salt and pepper. Mash them together in a small bowl with a fork.

Lay out a piece of plastic wrap, and place the butter in the center. Roll the plastic wrap around to form a log shape with the butter, then twist the ends. Leave in the fridge until it has hardened.

Heat a grill or grill pan and season the steaks with salt and pepper. Cook until done to your liking, let rest, then transfer to serving plates.

Slice the butter into six slices, then place three on each steak.