How do You Make Puppy Chow for Humans?

Puppy chow is a mixture of 1/2 cup peanut butter, 1/4 cup butter, 1 cup chocolate chips, 1/2 tsp vanilla, 9 cups cereal, and 1 1/2 cups powdered sugar. Microwave first three ingredients then add remaining ingredients one at a time until mixed. Enjoy!