Step 1: Prepare the Steak

1. Bring to Room Temperature: Remove the steaks from the refrigerator at least 30 minutes before cooking to allow them to come to room temperature. This helps them cook evenly.
2. Season the Steak: Pat the steaks dry with paper towels and season generously with salt and black pepper on both sides. Press the seasoning into the meat to help it adhere.

Step 2: Sear the Steaks

1. Heat the Oil: In a large cast-iron skillet or heavy-bottomed pan, heat the olive oil over medium-high heat until it’s hot and just beginning to smoke.
2. Sear the Steaks: Add the steaks to the hot pan and sear for 2-3 minutes per side for medium-rare, or until they reach your desired level of doneness. Avoid moving the steaks while they sear to achieve a nice crust.
3. Add Butter, Garlic, and Herbs: In the last minute of cooking, add the butter, smashed garlic cloves, and fresh rosemary or thyme sprigs to the pan. Tilt the pan slightly to spoon the melted butter over the steaks, basting them for added flavor.
4. Rest the Steaks: Transfer the steaks to a plate and cover loosely with foil. Let them rest for 5-10 minutes to allow the juices to redistribute.

Step 3: Make the Bourbon Sauce

1. Deglaze the Pan with Bourbon: Carefully pour the bourbon into the skillet to deglaze, scraping up any browned bits from the bottom of the pan. Be cautious, as the bourbon may cause a quick flame (which will die down after a few seconds).
2. Add Garlic and Brown Sugar: Add the minced garlic and brown sugar to the skillet, stirring until the sugar dissolves and the garlic is fragrant, about 1-2 minutes.
3. Add Remaining Ingredients: Stir in the beef broth, Worcestershire sauce, Dijon mustard, and balsamic vinegar (if using). Let the sauce simmer for 3-4 minutes to reduce slightly and concentrate the flavors.
4. Finish with Butter and Cream: For a richer sauce, add 1 tablespoon of butter and, if desired, the heavy cream. Stir until the butter melts and the sauce becomes glossy and smooth. Taste and adjust seasoning with salt and pepper as needed.

Step 4: Serve the Steak with Bourbon Sauce

1. Slice and Plate: Slice the rested steaks against the grain for tenderness, or serve them whole.
2. Drizzle with Sauce: Pour the bourbon sauce over the steaks or serve it on the side. Garnish with fresh parsley or a sprig of rosemary for a touch of color.
3. Serve: Serve immediately with your favorite sides