Green Rice Crispy Treats

These are easy and perfect for St. Patrick's Day!
 What you will need:
1/4 cup butter
10 ounces marshmallows(1 package)
1/2 teaspoon vanilla extract
1/2 teaspoon liquid green food coloring
6 cup rice crispies

What you will need to do:
Line a 13x9 inch pan with foil. Lightly butter or spray. Set aside. Butter or spray large bowl and put rice crispies in ti. Set aside. Melt butter in large sauce pan on low heat, add marshmallows; stir constantly until melted. Remove from heat. Stir in vanilla and food coloring. Pour over rice crispies and mix. Press into prepared pan with buttered spatula. Let cool. You can cut into regular squares or use fancy shamrock cookie cutters for a fun shape!