Season both sides of the steak generously with Cathy's Gluten Free Spice Mix. Let it sit at room temperature for 30 minutes.

Set steak on hot grill and leave for 3 minutes. (Close the lid for more even cooking, trying to maintain your grill close to a temperature of 350 degrees Fahrenheit.)

For fancy grill marks on your steak, rotate it a half turn or so and cook another 2 minutes.

Flip steak over and cook an additional 3 to 10 minutes, depending on desired degree of doneness. For accuracy, test the internal temperature with a thermometer.