1-Preparation and Mise en Place: Spray a 9 x 13-inch baking pan with cooking spray to prevent sticking. Measure out all your ingredients so you can move quickly once things heat up. This step keeps the process fun and stress-free, especially if you’re adapting for dietary needs like using vegan options.

2-Melting and Mixing the Base: Melt the butter in a large pot over low heat until it’s fully liquefied. Add the marshmallows and stir until they’re completely melted and combined with the butter. Remove from heat, then stir in the vanilla extract and rice cereal until everything is mixed well. For a smoother finish, follow the original instructions to ensure even coating.

3-Shaping and Cooling: Pour the mixture into the prepared baking pan and press it evenly using a spatula that’s been sprayed with cooking spray. Let it cool until firm, then cut into 21 rectangles for the perfect size. This part takes about 10 minutes to prepare and cool before you move on to decorating.

4-Adding the Monster Coating: Melt about 1 cup of colored melting candies in a microwave-safe bowl at 50% power for 1 minute, then stir and continue in 30-second increments until fully melted. Stir in 1/2 to 2 teaspoons of cooking oil to thin it out for a smoother finish. Dip one end of each rectangle into the melted candy, scrape off excess, and place on parchment paper to set. Press the candy eyes into the coating in fun combinations, then let cool for about 40 minutes or chill for 5 to 10 minutes if needed.