The #1 tip for cooking grass-fed beef is cook at lower temperatures.

Grass-fed beef fat has a different consistency and less water than
traditional grain-fed beef - cooking at a lower temperature helps maintain
tenderness and juiciness.

The #2 tip for cooking grass-fed beef is
do not overcook.  Grass-fed
beef is best if cooked rare to medium rare.  The primary reason for tough
grass-fed beef is over cooking.  If you insist on well done, cook at a very
low temperature in a sauce to add moisture.

Other tips:

  • Use tongs - if you pierce the meat with a fork, you'll lose precious
    juices.
  • Do not thaw in the microwave.
  • Do not cook your grass-fed beef straight out of the refrigerator -
    allow your meat to come to room temperature for about 15 minutes
    before cooking.
  • Marinate your steaks.
  • When grilling, sear the steak quickly over high heat on each side
    then reduce heat to medium or low - watch your steaks carefully -
    your beef can go from perfectly cooked to overcooked in less than
    a minute.
  • When using a crock pot to cook a roast, always use the lowest
    setting.
Cooking Tips for Grass-Fed Beef