Melt the butter in a large pot over medium heat. Add the mini marshmallows and stir until fully melted and smooth. Remove the pot from the heat and stir in the green food coloring until the mixture turns an even shade of green.

Pour the Rice Krispies cereal into the pot and stir quickly until every piece is coated. Let the mixture cool for one minute so it is safe to handle but still warm. Divide the mixture into four equal portions and shape each into a ball.

Push one wooden stick into the center of each ball. Press four candy eyes onto the front of each pop while the mixture is still warm so they stick firmly.