small Red Onion
Kosher salt and pepper
2-lb, 2-in.–thick sirloin steak
fresh lemon juice
Baked potatoes, for serving
- Heat oven to 400°F. In a roasting pan, combine the mushrooms, celery, lemon, onion, oil, and 1⁄4 tsp each salt and pepper.
- Season the steak with 1⁄2 tsp each salt and pepper, rub with the garlic and place on top of the vegetables.
- In a small bowl, whisk together the ketchup, lemon juice and Worcestershire.
- Spoon the ketchup mixture over the top of the steak and roast to desired doneness, 125°F for medium-rare, 30 to 35 minutes. Transfer the meat to a cutting board and let for rest at least 5 minutes before slicing. Serve the steak with the vegetables and baked potatoes, if desired.