2 c. sugar
2 c. brown sugar
3/4 c. evaporated milk
1 1/2 c. marshmallow fluff
1 1/4 c. peanut butter

Cook sugars and milk on low heat until boiling. Boil 2 minutes, stirring constantly. Remove from heat. Add marshmallow and peanut butter. Stir thoroughly. Spread in buttered 13 x 9-inch pan. Refrigerate. Do not double.