In a large pot, over low heat, melt the butter. Once melted, add in the mini marshmallows and continue cooking and stirring until the marshmallows are completely melted and smooth.
Melt the almond bark or melting wafers in the microwave according to the package directions. Drizzle the melted chocolate over top the bars and immediately add the sprinkles and press the candy eyeballs into the chocolate lines.