1 (1 lb.) pkg. Oreos
1 c. sour cream
1/2 c. milk
1 (3.5 oz.) box vanilla instant pudding
1 (12 oz.) carton Cool Whip

Crush cookies finely; set aside. In bowl, mix sour cream and milk with whisk until well blended. Stir in instant pudding, mixing well. Stir in crushed cookies, but save some to sprinkle on top. Fold in Cool Whip. Pour into bowl and sprinkle cookie crumbs on top. Eat now or can be refrigerated for later.