Steak With Horseradish Sauce
["1/4 c. fat-free mayo", "1/4 c. reduced-fat sour cream", "1 Tbsp. Dijon mustard", "2 green onions, finely chopped", "2 tsp. prepared horseradish"]
["Using a sharp knife, score the surface of the steak with shallow diagonal cuts at 1-inch intervals, making diamond shapes. Repeat on the other side.", "In a large resealable plastic bag, combine the next five ingredients.", "Add steak.", "Seal bag and turn to coat.", "Refrigerate for 8 hours or overnight."]
["mayo", "sour cream", "mustard", "green onions", "horseradish"]