Grilled-Steak and Arugula Salad with Mustard Caper Vinaigrette

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Ingredients

1. 1 1/2 pounds sirloin steak, about 1 inch thick
2. 6 tablespoons olive oil
3. Salt
4. Fresh-ground black pepper
5. 1 pound arugula, leaves washed and torn in half (about 2 1/2 quarts)
6. 2 cups halved cherry tomatoes (about 3/4 pound)
7. 1 1/2 teaspoons Dijon mustard
8. 1/2 teaspoon anchovy paste
9. 1 tablespoon red- or white-wine vinegar
10. 2 tablespoons drained capers

1. Light the grill or heat the broiler. Coat the steak with 1 tablespoon of the oil. Sprinkle the steak with 1/2 teaspoon salt and 1/4 teaspoon pepper. Grill or broil the steak for 5 minutes. Turn the meat and cook to your taste, about 5 minutes longer for medium rare. Transfer the steak to a carving board and leave to rest in a warm spot for 5 minutes.
2. Meanwhile, put the arugula on a platter or on individual plates. Top with the cherry tomatoes and sprinkle with 1/8 teaspoon salt.
3. In a medium glass or stainless-steel bowl, whisk together the mustard, anchovy paste, vinegar, capers, 1/4 teaspoon salt, and 1/8 teaspoon pepper. Add the remaining 5 tablespoons oil slowly, whisking.
4. Slice the steak on the diagonal. Put the slices on top of the arugula and tomatoes and drizzle the vinaigrette over all.