In a large skillet, melt butter over medium heat. Once melted, add marshmallows and marshmallow fluff to the skillet. Stir constantly until completely melted and smooth.

Add 5-8 drops of green food coloring. Stir well until combined.

Quickly combine the melted marshmallow mixture with the Rice Krispies cereal in a large bowl. Mix well as the mixture will start to set.

Press the Rice Krispies mixture evenly into a greased 9×13 baking dish.

Place into refrigerator for at least 15 minutes or until firm. Remove from refrigerator and cut into 3x4-inch squares.

In a small microwavable safe bowl, combine dark chocolate chips with vegetable oil. Microwave in 30-second intervals, stirring until melted and smooth.

Dip the top inch of each Rice Krispy treat into the melted chocolate and place on a greased cooling rack or non-stick surface. Refrigerate to firm the chocolate if needed.

Use black or brown icing to make small dots where you want the eyes and stick candy eyes to the dots. Use icing to add a mouth under the eyes.

Cut Tootsie Rolls in half and use icing to stick them to the sides of the treats.

Once the icing has set, serve and enjoy!