In the bowl of a food processor pulse Oreos until fine crumbs form. Place in a mixing bowl and add melted butter. Stir to combine, making sure all crumbs are moistened.
1 14.3 ounce package Oreo cookies, not double stuff, 1 stick butter
Press crumb mixture evenly into ungreased 9 x 13 inch baking dish. Freeze at least 1 hour.
Remove vanilla ice cream from freezer and soften, do not allow to melt! Spread evenly over frozen Oreo crumb crust. Freeze for 1 hour or until ice cream has hardened up.
1 1.5 quart vanilla ice cream
In a small saucepan combine sweetened condensed milk and chocolate syrup. Cool slightly and then pour and spread over ice cream. Freeze 2 hours minimum.
1 14 ounce can sweetened condensed milk, 16 ounces chocolate syrup
Once top is frozen, spread Cool Whip evenly over chocolate mixture and return to freezer. Freeze an additional 1 - 2 hours or until topping is frozen and you are ready to serve.
1 8 ounce container Cool Whip, thawed