Combine all ingredients for the compound butter in a microwave-safe bowl or measuring cup and microwave on medium heat for about 1 minute, until melted.
Pour the melted butter into an ice cube tray, being sure to get equal amounts of herbs into each cube.
Refrigerate for at least 1 hour, until set. (Can be made ahead of time and extra cubes of butter can be frozen.)
Pull steak from refrigerator and set out on counter for 30-60 minutes. Apply cracked pepper and kosher salt.
Heat a large cast iron skillet over medium-high heat.
Melt a couple tablespoons of coconut oil in the pan, then add the steak.
Cook for 3-5 minutes on each side, until an internal temperature of 130°F (medium-rare) has been reached.
Let rest for several minutes. While resting, remove one of the pads of compound butter and rub over the steak.