Peanut Butter Rice Krispy Treats

Line 9x13 pan with aluminum foil and spray with non-stick spray. Use a non-stick pot - about 6 qt and melt together on low: 1/2 stick of butter 1/2 c peanut butter splash of vanilla Turn up to medium and add 10 oz. bag of mini marshmallows and keep stirring until mostly melted. Add about 6 cups of rice krispy cereal and fold in. Press mixture into pan. Let cool and then cut into squares to serve.