Melt 1/2 stick margarine with 1 square baking chocolate
Stir in 2/3 c. sugar and 1 small can evaporated milk. Bring to a boil and boil for three minutes.
After you let it cool a little you put it on top of the ice cream that has been freezing.
The bottom is a mixture of Oreos and margarine. 28 double-stuffed Oreos (or 32 regular) ground up in a food processor mixed with 1/3 c. melted margarine. Spread on the bottom of a 12" x 12" container. Put some softened vanilla ice cream on top. Put it in the freezer. After the topping has cooled a bit, put that on top.
This is a really good dessert that I get many requests for.