To cook a steak on a gas grill, heat up the grill, season the steak, and then cook it by turning halfway through so that the steak cooks evenly. Before starting to prepare the steak, gather grilling tongs, salt, pepper and olive oil so they are close at hand.
Prepare the gas grill by cleaning and oiling the grates. When it is clean, turn the grill on and close the lid. Leave the grill on for 20 to 30 minutes to give it time to heat up.
While the grill is heating, take the steak out of the refrigerator and allow it to warm up to room temperature. Use a paper towel to pat the steak dry and then brush a small amount of olive oil onto each side of the steak. Season the steak with salt and pepper.
When the grill is hot, lay the steak onto the grate, away from direct flames. Cook the steak for a couple of minutes and then turn it 45 degrees to create a diamond pattern of grate lines. Flip the steak over after another couple of minutes and repeat on this side. Reduce the cooking time for rare steaks and increase for a well-done steak.
Remove the steak from the grill with tongs and leave it to rest for five minutes. Resting the steak keeps the juices inside, preventing them from running out as soon as the steak is cut.