Optional Butter: Add 1 tablespoon of olive oil to a medium-sized sauté pan over medium-low heat and cook the onions and garlic until lightly browned, about 5 to 7 minutes. Be sure to stir the onions and garlic every 30 seconds or so, so that they do not burn, which can take place on the outer edges of the pan.
Transfer the onions and garlic to a stand mixer with the whisk attachment along with the butter, thyme, rosemary, lemon zest, lemon juice, Worcestershire sauce, salt, and pepper and mix on medium speed for 5 to 7 minutes or until light and fluffy. You can absolutely mix this using a whisk in a large bowl if the butter is soft enough or using an electric hand mixer. There will be plenty of butter left over, which will freeze well.
Steak: Coat the steak in the remaining 2 tablespoons of olive oil on all sides and season the steak on all sides with salt and pepper, and place on a very hot grill (450° to 550°).
Cook for 4 minutes, give a quarter turn, and cook for 2 more minutes and then flip over cooking for another 2 to 4 minutes to achieve a rare to medium-rare internal temperature.
Rest the steak for 2 to 3 minutes before serving with the lemon butter. Slice the steak and serve it with an optional salted baked potato.
Notes
Make-Ahead: Grilled steak is meant to be eaten as soon as it is done cooking.How to Reheat: This recipe does not reheat well, but if you do need to reheat it, then re-grill it on a hot grill for 2 to 3 minutes per side or until warm.How to Store: Cover and keep in the refrigerator for 3 days. This recipe will not freeze well.Reheating your steak will 100% cause it to increase in internal temperature, most likely past medium and into medium-well.You may not get the perfect grill marks, and that’s ok. The most important thing is that there are some browning marks on the steak and that it is cooked at the perfect internal temperature. Grill marks are for show, nothing else.