Add the butter & marshmallows in a bowl and melt them together. This can be done in the microwave or on the stove top.
add in Rice Krispies and mix thoroughly
Thoroughly and evenly mix the marshmallows and Rice Krispies together.
Spread the mixture into a greased pan with a greased spatula.
Allow mixture to cool (about 30 minutes)
spread German Chocolate Cake icing across entire top
Use black icing or edible writing gel to make Scoobys spots
cut into squares and enjoy your Scooby snacks!