Grass fed sirloin steak can be a real treat if you know how to cook it properly. Grass fed steaks tend to be leaner and slightly tougher than grain finished steaks, but the improved flavor and health benefits are worth the extra effort. If you want to learn all about cooking grass fed meat I highly recommend reading Tender Grassfed Meat: Traditional Ways to Cook Healthy Meat by Stanley A. Fishman.
Remove the steaks from the refrigerator. Rub both side of the steaks with salt, pepper and a small amount of olive oil. Let the steaks sit at room temperature for 1/2 to 1 hour (this is important, it makes the meat tender).
I like to use the broiler pan to prepare these steaks. Set the oven broiler to high and ensure the oven shelf is on the second setting from the top. Place the steaks in the oven underneath the broiler. After about 5 minutes (if the steaks are browned to your liking), flip the steaks. Cook for about another five minutes, then check the internal temperature of the steaks. I take the steaks out at about 115 degrees.
Let the steaks rest about 10 minutes.
Thinly slice this cut of meat to further improve the tenderness. I love having some kim chi along side the meat, mashed cauliflower would be great with it too.