Melt butter in 3 qt. saucepan. Add marshmallows & stir constantly till melted. Add cereal & stir to coat. Press into buttered 9 x 13" pan. Add sprinkles while still warm.
Sprinkle sideways close to bars to create lines.
Sprinkle on red lines as shown.
Place red lines halfway between green lines.
Let cool. Cut into bars and serve.
Just a fun way to dress them up!