1 lb. brown sugar
1 c. sugar
3 tbsp. flour
1 c. evaporated milk
1/2 tsp. salt
1 tsp. vanilla
2 tbsp. marshmallow fluff
1-2 tbsp. butter

Mix sugars with flour, salt and evaporated milk. Stir well. Bring to a rolling boil, stirring constantly. COOK EXACTLY 5 MINUTES AFTER BOIL BEGINS. Remove from heat and add marshmallow and butter. Beat until thick and creamy. Pour into buttered 8x8 inch pan.