Make your favorite Rice Krispie recipe. While the Krispies are still warm, add sprinkles on top. Allow to cool. Cut rice Krispies into square or rectangular shapes.
Add a dollop of frosting or black cookie decorating gel to the center of the treat. Carefully separate the top and bottom cookies from the mini Oreo Cookies.
Add a small black dot in the center of the cookie to make an eyeball. Place eyeball on the dollop of frosting on the Rice Krispie Treat