Ingredients:

  • 2 Sirloin Steaks (about 1.25 inches / 3 cm thick), 10 oz / 280g each
  • 1 Tablespoon High-Heat Cooking Oil (e.g., grapeseed, canola, or clarified butter/ghee)
  • 1 Tablespoon Coarse Sea Salt (or kosher salt)
  • 1 Teaspoon Freshly Ground Black Pepper
  • 3 Tablespoons Unsalted Butter, cold and cut into cubes
  • 2 Cloves Garlic, lightly smashed (peel on is fine)
  • 2 Sprigs Fresh Thyme (or Rosemary)

Instructions:

  1. Bring to Room Temperature: Remove the Sirloin Steaks from the refrigerator 40 minutes prior to cooking. Pat the steaks aggressively dry with paper towels—this is non-negotiable for a good crust.
  2. Season Heavily: Season both sides and the edges liberally with salt and pepper. Place the seasoned steaks on a wire rack over a baking sheet and allow them to rest for at least 30 minutes.
  3. Prepare Aromatics: Gather the butter, smashed garlic, and herb sprigs near the stove.
  4. Heat the Pan: Place the heavy-bottomed pan over high heat. Add the high-heat oil. Heat until the oil is shimmering and just beginning to smoke lightly (use caution and ensure good ventilation!).
  5. Initial Sear: Gently place the steaks in the hot pan, ensuring they are not touching. Do not move them for 2 minutes.
  6. Flip and Sear: Flip the steaks and sear the other side for another 2 minutes. This creates the foundational crust.
  7. Introduce Butter and Aromatics: Reduce the heat to medium. Add the cold butter, garlic, and herbs to the pan.
  8. The Butter Bath: As the butter melts, tilt the pan slightly so the butter pools on one side. Use a large spoon to continuously scoop the foaming butter mixture over the top of the steaks (basting) for 3-5 minutes, flipping every 30 seconds.
  9. Check Internal Temperature: Use an instant-read thermometer inserted into the thickest part of the steak. Cook until the desired temperature is reached (e.g., Medium-Rare: 130–135°F).
  10. Rest the Steak (The Most Important Step): Immediately remove the steaks from the pan and place them back on the wire rack. Tent loosely with foil. Allow the steaks to rest for 10 minutes (this allows the juices to redistribute).
  11. Slice and Serve: Slice the steak against the grain. Serve immediately, drizzling any accumulated resting juices (the au jus) over the top.