Marinated Steak Salad

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Ingredients

1. 1 medium shallot, minced
2. 1/2 teaspoon minced fresh rosemary
3. Salt and freshly ground pepper
4. 3 tablespoons sherry wine vinegar
5. 2 tablespoons Dijon mustard
6. 1/4 cup walnut oil
7. 1/4 cup plus 1 tablespoon vegetable oil
8. Four 1-inch-thick boneless steaks (about 7 ounces each)
9. 1/2 cup coarsely chopped walnuts
10. 2 Belgian endives, cut crosswise into 1-inch pieces
11. 1 pound escarole, torn into bite-size pieces
12. 4 ounces Roquefort cheese, crumbled (about 1 cup)

1. In a small nonreactive saucepan, combine the shallot, rosemary and 1/2 teaspoon each salt and pepper. Stir in the vinegar and mustard. Whisk in the walnut oil and vegetable oil. Arrange the steaks on a nonreactive baking sheet, pour 1/4 cup of the dressing on top and turn to coat. Let marinate for 30 minutes.
2. Meanwhile, preheat the oven to 350°. Toast the walnuts for about 3 minutes, or until fragrant.
3. Preheat the broiler. Warm the remaining dressing over low heat; keep warm. Broil the steaks for about 2 minutes per side for medium-rare. Let rest for 2 minutes.
4. Toss the endives, escarole, Roquefort and walnuts with the dressing and mound on 4 plates. Cut each steak diagonally across the grain into 5 slices and arrange on the salads.