3 tbsp. butter
6 tbsp. brown sugar
6 tbsp. white sugar
1 1/2 c. powdered sugar (sifted)
1/2 c. sweet cream
9 marshmallows
1 1/2 tsp. vanilla

Mix butter, brown and white sugars and cream. Bring to a boil and cook rapidly for 2 minutes. Remove from heat and add marshmallows. When they have melted, add vanilla, powdered sugar. Stir until thick enough to spread. Enough for 2 layers.