Cup of Yum
1. Pour 5 cups Rice Krispies cereal into a large mixing bowl. Set aside. Lightly grease an 8x8-inch pan with nonstick spray or butter
2. In a medium saucepan over low heat, melt 1/4 cup butter. Once melted, add 4 cups mini marshmallows. Stir constantly until the marshmallows are fully melted and the mixture is smooth, about 3–5 minutes. Optional: Add purple, orange, or black food coloring at this stage to achieve a spooky hue.
3. Immediately pour the melted marshmallow mixture over the cereal. Stir with a rubber spatula until the cereal is evenly coated. If adding in sprinkles, fold them in at this stage.
4. Transfer the mixture to the prepared 8x8-inch pan. Using a piece of wax or parchment paper, press the mixture evenly into the pan. Be careful not to press too hard to keep the treats light and chewy.
5. Allow the treats to cool completely at room temperature, about 20–30 minutes. For faster cooling, place the pan in the refrigerator for about 5 minutes. Decorate with additional sprinkles, or other decorations as desired.

To Decorate

Cup of Yum
1. Mummy Treats: Drizzle white candy melts in a crisscross pattern over the Rice Krispie squares. While the candy melt is still wet, place two candy eyes on each square for the mummy face.Ghost Faces: Spread melted white candy melts over the top of each square to create a ghostly base. Add two chocolate chips for eyes and one for the mouth.Spiderwebs: Melt dark or milk chocolate and drizzle it in a spiral pattern on top of the squares. Use a toothpick to drag lines outward from the center to create a spiderweb design.