Ingredients:
- 6 tablespoons (85g) unsalted butter
- 10 ounces (283g) miniature marshmallows
- 1/2 cup (125g) creamy peanut butter
- 1 teaspoon vanilla extract
- 6 cups crisped rice cereal (e.g., Rice Krispies)
- 1 cup semi-sweet chocolate chips (for drizzle)
- 2 tablespoons smooth peanut butter (for drizzle)
Instructions:
- Line a 9x13 inch baking pan completely with parchment paper, ensuring there is an overhang on the sides for easy lifting later. Lightly grease the parchment paper.
- In a large, heavy-bottomed saucepan over low heat, melt the butter until just liquid. Add the 1/2 cup of creamy peanut butter and stir constantly until smooth and fully combined. Keep the heat very low to prevent scorching.
- Remove the pan from the heat immediately. Add all the marshmallows at once and stir gently until the mixture is completely melted and smooth.
- Stir in the vanilla extract. Pour the warm marshmallow mixture over the crisped rice cereal in a large mixing bowl.
- Using a spatula, gently fold the cereal into the marshmallow mixture until it is evenly coated. Do not overmix, as this can lead to tough bars.
- Transfer the mixture to the prepared pan. Lightly grease your hands or a spatula and gently press the mixture evenly into the pan. Avoid packing it down too tightly.
- Allow the treats to cool completely at room temperature for a minimum of 1.5 to 2 hours, or place in the refrigerator for 1 hour to speed setting.
- For the optional drizzle: Melt the chocolate chips and the 2 tablespoons of peanut butter together gently (using a double boiler or microwave in 30-second bursts) until smooth. Drizzle decoratively over the set squares.
- Once fully set, use the parchment paper overhang to lift the slab out of the pan. Cut into 16 squares using a large, sharp knife.