Position racks in the top and bottom of the oven; place a rimmed baking sheet on the bottom rack. Preheat the oven to 450 degrees F. Toss the potatoes with 2 tablespoons olive oil, 1/2 teaspoon salt and a few grinds of pepper in a bowl. Spread on the hot pan and bake, turning once, until golden and tender, 18 to 20 minutes.
Meanwhile, whisk the steak sauce, vinegar, mustard and remaining 2 tablespoons olive oil in a large bowl; set aside. Heat a large ovenproof skillet over high heat. Brush the steak on both sides with olive oil and season with salt and pepper. Add to the skillet and cook until browned, about 2 minutes per side. Brush the top of the steak with about 1 tablespoon of the vinaigrette. Transfer the skillet to the top oven rack and cook until a thermometer inserted sideways into the steak registers 120 degrees F for medium rare, about 4 minutes. Transfer to a cutting board and let rest 5 minutes, then thinly slice against the grain.
Whisk 2 tablespoons of the juices from the skillet into the bowl with the vinaigrette. Add the romaine, tomato and chives; season with salt and pepper and toss. Divide the salad among plates and top with the potatoes, steak, blue cheese and more chives.
Tools You May Need
Photograph by Ryan Dausch
Tools You May Need
Price and stock may change after publish date, and we may make money off
these links.