Combine sugar, milk, margarine, and cocoa in saucepan and bring to a full rolling boil. Boil 1 minute. Remove from heat and add salt and vanilla. Blend in the peanut butter and oats. Mix well. Drop by teaspoonfuls onto waxed paper. Allow to cool.

cookies puff during baking then settle when removed from the oven, forming a pretty, crinkled top.