Ingredients

  • 2/3 cup nonfat sour cream
  • 1/4 cup Dijon mustard
  • 2 tablespoons minced fresh tarragon
  • 2 tablespoons prepared horseradish
  • 1 (1 1/2 lb) beef tenderloin, trimmed
  • 1/2 teaspoon fresh ground black pepper
  • cooking spray
  • 2 tablespoons fresh lemon juice
  • 3 cups trimmed watercress (about 1 bunch)
  • 1 (8 ounce) French baguettes, cut diagonally into 16 slices
  • 2 tablespoons capers
  • 1/2 cup shaved fresh parmesan cheese

Method

  • Combine first 4 ingredients, stirring well with a whisk. Cover and chill.
  • Secure beef at 2-inch intervals with cooking twine. Sprinkle beef with pepper. Heat a large nonstick skillet over medium-high heat; coat pan with cooking spray. Add beef to pan; cook 15 minutes or until desired degree of doneness, turning frequently. Let stand 15 minutes. Cut into 16 slices. Sprinle with lemon juice.
  • Arrange watercress evenly on bread slices. Place 1 beef slice and about 1 tablespoon chilled sauce over each bread slice. Arrange capers and cheese evenly over sauce.