Crush Oreos and combine with melted butter. Reserve at least 1 cup of crumbs for later, and press remaining crumbs firmly into a 9 by 13 inch pan.

Let ice cream become soft enough to spread onto crumbs, or slice ice cream in1 inch layers and place on top of crumbs and press seams together.

Top ice cream with a few more crumbs.

Drizzle with Hot fudge Sauce and sprinkle toasted nuts on top if desired.

Spread Whipped topping over all, and drizzle again with Hot fudge Sauce. Cover and return to freezer.

You can also follow above directions to make cupcakes, or make into 2 pie plates.