New York Strip Steaks

INGREDIENTS

• 1 tablespoon chopped fresh parsley leaves
• 1 cup sour cream
• 1 teaspoon lemon zest
• 6 (1-inch thick) boneless New York strip steaks
• 2 teaspoons Worcestershire sauce
• 1/4 teaspoon salt
• 3 cloves garlic, minced
• 3 tablespoons Dijon mustard
• 1/4 cup fresh lemon juice
• 2 cups butter
• 1/2 cup olive oil, plus oil for skillet
• 1 teaspoon ground black pepper
• Tarragon Melting Sauce, recipe follows
• 2 tablespoons minced green onion
• 1 tablespoon minced fresh tarragon leaves
• 2 teaspoons fresh lemon juice