Pour the cereal into a large bowl. Set aside.
9 cups Rice Chex, Corn Chex, or Crispix cereal
In a microwave-safe bowl, melt the butter, chocolate chips, and peanut butter in 30-second intervals, stirring in between, until smooth.
1 cup butter, 1 cup semi-sweet chocolate chips, 1/2 cup peanut butter
Stir in the vanilla extract and a few drops of pink food coloring into the melted chocolate mixture. Add more food coloring, a drop at a time, until you reach your desired shade of pink.
1 teaspoon vanilla extract, Pink food coloring
Pour the chocolate mixture over the cereal. Gently mix 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.
2 cups powdered sugar
Seal the bag and gently shake until the cereal is completely coated in powdered sugar.
2 cups powdered sugar
Spread the Pink Valentine Puppy Chow Mix out on a wax paper-lined baking sheet to cool completely.
While still slightly tacky, sprinkle with Valentine's Day sprinkles.
Valentine's Day sprinkles
Once cooled, store in an airtight container. Share (if you want to!) and enjoy!