Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
                        mustard vinaigrette
  1         tablespoon  plus 1 teaspoon balsamic vinegar
  4          teaspoons  dijon mustard
  1           teaspoon  worcestershire sauce
  1               dash  tabasco sauce
     1/4           cup  regular or low-fat sour cream
     1/3           cup  olive oil
                        salt and pepper to taste
                        salad
  1                     boneless sirloin steak -- (2 lb.) cut
  2             inches  thick
                        salt and pepper
     1/2         pound  mushrooms -- sliced
     1/2           cup  sliced green onions
  1                can  hearts of palm -- (14 oz.) drained
                        and sliced
  2        tablespoons  chopped fresh dill or 2 teaspoons dried
                        dill
  2             medium  tomatoes -- sliced, for garnish
                        (optional)

Preparation:

To make vinaigrette, whisk vinegar, mustard, Worcestershire sauce, Tabasco sauce, sour cream and oil in a small bowl. Season with salt and pepper. (Vinaigrette may be refrigerated for several days. ) To make salad, season steak with salt and pepper. Broil or grill until medium rare, about 8 to 10 minutes per side. An instant read thermometer should register about 130. Cool steak slightly. To slice easily, freeze steak until firm, but not solid and slice thinly. Place slices in large bowl. Add mushrooms, green onions, hearts of palm and dill. Pour dressing over and toss well. Garnish with tomato slices, if desired. (Salad may be refrigerated for 6 to 8 hours. Bring to room temperature before serving.) Prep Time: 20 minutes Cook Time: 16 to 20 minutes Makes: 8 servings This salad is a great way to use up leftover roast beef, but well worth the time to cook a steak. It's perfect for dinner on a warm summer night or to take on a picni

Nutritional Information:

817 Calories (kcal); 75g Total Fat; (78% calories from fat); 10g Protein; 37g Carbohydrate; 0mg Cholesterol; 346mg Sodium