Roasted Grass-Fed Beef Marrow Bones With Ginger-Parsley Spread

You've seen the images, Neanderthal man walking around with a bone ready to hit his selected mate over the head and drag her back to his man cave. Turns out that bone he was carrying around may have served another purpose… lunch!

Seriously, if you haven't yet indulged in the marrow of a roasted grass-fed bone, what. are. you. waiting. for?