1/4 c. rolled oats
1/4 c. brown sugar
1/2 c. chopped pecans
1 qt. vanilla ice cream
1/2 c. butter
1 c. flour
1 jar butterscotch or caramel topping

Mix sugar, flour, oats, butter and nuts. Put into 13x9 inch pan. Bake at 400 degrees for 15 minutes. Stir to crumble while still warm. Spread 1/2 of the crumbs in a 9x9x2 inch pan.

Drizzle 1/2 of the butterscotch over crumbs. Add softened ice cream. Drizzle remaining butterscotch topping over ice cream and then top with remaining crumbs. Freeze.