In a large pot, melt the butter over low heat.

Add the marshmallows to the melted butter and stir constantly until completely smooth.

Remove from heat and stir in the orange food coloring until the mixture is a uniform pumpkin color.

Fold in the crispy rice cereal until well coated with the marshmallow mixture.

Grease your hands with butter or non-stick spray, then scoop out portions and roll them into balls to form pumpkin shapes.

Press a Tootsie Roll half into the top of each ball to create a stem and use the green icing to pipe a small leaf next to the stem.

Allow the treats to set at room temperature for 30 minutes before serving.