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In a medium bowl, whisk together the balsamic vinegar, olive oil, Dijon mustard, Worcestershire sauce, minced garlic, chopped rosemary, chopped thyme, salt, and black pepper to create the marinade.

Place the sirloin steak in a shallow dish or a resealable plastic bag. Pour the marinade over the steak, ensuring it is evenly coated. Cover the dish or seal the bag, and refrigerate for at least 2 hours, or preferably 4-6 hours, turning occasionally. Do not marinate for more than 8 hours, as the acidity can break down the meat too much.

About 30 minutes before cooking, remove the steak from the refrigerator to allow it to come closer to room temperature. Discard any remaining marinade.

Heat 1 tablespoon of olive oil in a heavy-bottomed skillet (cast iron works best) over medium-high heat until shimmering and almost smoking.

Carefully place the steak in the hot skillet. Sear for 3-5 minutes per side for medium-rare (internal temperature 130-135°F), or longer for desired doneness. For medium, aim for 5-7 minutes per side (internal temperature 135-140°F).

Once cooked to your preference, remove the steak from the skillet and transfer it to a cutting board. Tent loosely with foil and let it rest for 5-10 minutes before slicing. This allows the juices to redistribute, resulting in a more tender and flavorful steak.

Slice the steak against the grain into desired thickness and serve immediately.


In a medium bowl, whisk together the balsamic vinegar, olive oil, Dijon mustard, Worcestershire sauce, minced garlic, chopped rosemary, chopped thyme, salt, and black pepper to create the marinade.

Place the sirloin steak in a shallow dish or a resealable plastic bag. Pour the marinade over the steak, ensuring it is evenly coated. Cover the dish or seal the bag, and refrigerate for at least 2 hours, or preferably 4-6 hours, turning occasionally. Do not marinate for more than 8 hours, as the acidity can break down the meat too much.

About 30 minutes before cooking, remove the steak from the refrigerator to allow it to come closer to room temperature. Discard any remaining marinade.

Heat 1 tablespoon of olive oil in a heavy-bottomed skillet (cast iron works best) over medium-high heat until shimmering and almost smoking.

Carefully place the steak in the hot skillet. Sear for 3-5 minutes per side for medium-rare (internal temperature 130-135°F), or longer for desired doneness. For medium, aim for 5-7 minutes per side (internal temperature 135-140°F).

Once cooked to your preference, remove the steak from the skillet and transfer it to a cutting board. Tent loosely with foil and let it rest for 5-10 minutes before slicing. This allows the juices to redistribute, resulting in a more tender and flavorful steak.

Slice the steak against the grain into desired thickness and serve immediately.
