Rog loves this!

1 lb. Oreo cookies, crushed
1 stick butter, melted
1/2 gal. vanilla ice cream, partially melted
2/3 C. chocolate chips
1 stick butter
1 - 13 oz. can evaporated milk
2 C. powdered sugar
1 tsp. vanilla

Crush the Oreo cookies and add the melted butter. Mix together and press into a 9×13″ pan. Freeze. Take ice cream out of freezer to melt partially. Melt the chocolate chips and 1 stick butter. Gradually add the evaporated milk and powdered sugar. Stir constantly and bring to a boil. Boil 8 minutes and remove from heat. Add the vanilla. Place mixture in freezer to cool quickly. Put ice cream on Oreo layer and freeze until ice cream is hard. Take sauce out of freezer and put in refrigerator. When ice cream is hard, pour sauce over ice cream layer and freeze until hard.