Preparation Steps

• Add the butter to a large heavy-bottomed pot set over medium-low heat. Once the butter has melted, stir in the marshmallows and cook, stirring, until the mixture is smooth.
• Add food coloring until the mixture reaches your desired color then stir in the cereal until well-coated. Immediately pour the mixture into a 13×9-inch baking pan. Flatten the cereal into an even layer then let the treats cool completely, about 15 minutes.
• Once the treats have cooled, invert them onto a cutting board and cut them into 12 or 18 rectangles.
• Break each pretzel stick in half, and then insert each half into the sides of the treats to form the 'bolts' in Frankenstein's neck.
• Melt the chocolate per the package instructions until smooth. Dip the tops of the treats into the melted chocolate, and then immediately top with sprinkles.
• Use the remaining chocolate to adhere the candy eyes and pipe mouths. Let the treats set until the chocolate has fully hardened, about 10 minutes, then serve.