Garlic Potato Tapa

1 Tbsp. GREY POUPON Dijon Mustard
1/3 cup MIRACLE WHIP Dressing
2 garlic cloves, minced
1 tsp. ground black pepper
3 lb. potatoes, peeled, cut into 1-inch cubes, cooked and cooled
1/4 cup green onion slices

COMBINE mustard, dressing, garlic and pepper in large bowl.
ADD potatoes and onions; mix lightly. Cover.
REFRIGERATE at least 1 hour before serving.