Heat a frying pan. If you are cooking two slices of steak, make sure the pan is large enough to fit the slices comfortably. Otherwise, use two pans and heat them simultaneously. Add the steak to the skillet and cook over medium-high heat for 2 to 3 minutes on each side (depending on the desired thickness and degree). As a guideline, a 3cm steak should be cooked after 5 minutes. If you have a meat thermometer, the indoor temperature should be 50 ° C for rarity, 60 ° C for average and 70 ° C for good cooking.
After turning the steak for the first time, add the butter, thyme and garlic and stir for one minute. To do this, tilt the pan towards you until the butter collects at the bottom of the pan, then pour the butter over the steak repeatedly.