In a large, microwave-safe bowl, combine the white chocolate chips, peanut butter, and butter. Microwave in 30-second intervals, stirring in between, until completely melted and smooth.
1 cup white chocolate chips, ½ cup creamy peanut butter, ¼ cup butter
Stir in vanilla extract and a few drops of pink food coloring until you achieve your desired shade of pink.
1 teaspoon vanilla extract, Pink food coloring
Pour the melted mixture over the cereal in a very large bowl. Gently stir until all the cereal is evenly coated.
9 cups Rice Chex, Corn Chex, or Crispix cereal
Place the powdered sugar in a large resealable bag. Add the coated cereal to the bag, seal, and shake well until all the cereal is coated with powdered sugar.
1 cup powdered sugar
Spread the mixture on a parchment paper-lined baking sheet. Immediately sprinkle with Valentine's Day sprinkles.
Assorted Valentine's Day Sprinkles
Let the Pink Valentine Puppy Chow Mix cool completely before serving or storing in an airtight container.