Make herb oil: coarsely chop garlic, thyme, and rosemary and mix with 2 tbsp olive oil.
Season lamb steak with salt and pepper, then place into a freezer bag
Place herb oil mixture into the freezer bag and use to coat lamb steak.
Allow to marinate for at least an hour. Marinate overnight for best results.
Heat a skillet on medium high. When the skillet is hot, drizzle with the remaining 1 tbsp olive oil. Sear on both sides, 3-5 minutes each side for medium-cooked steak, depending on the thickness of the steak.
When lamb steak is ready, take out of the pan and allow to cool for 5-10 minutes. Slice against the grain of the meat and enjoy!