Instructions: Add vanilla to margarine. Stir in enough powdered sugar to form a stiff dough. Place dough between two large pieces of wax paper and roll out into a long, thin, rectangle shape. Remove top piece of paper and spread dough with peanut butter. Roll up like a jelly roll, peeling back wax paper as you go. Wrap wax paper around outside of roll and chill several hours.

Slice crosswise, 1/4 inch thick, using stainless steel paring knife. Store covered in a cool place.

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