Line a rimmed baking sheet with parchment paper.
In a microwave safe cup or bowl, place your chocolate chips, peanut butter, and butter. Then melt the ingredients, stopping to stir every 20 seconds.
Place the cereal into a large mixing bowl.
Stir in the vanilla extract to the melted ingredients and then carefully pour half of the melted ingredients over the cereal.
Toss the ingredients in the bowl and then repeat the process using the remaining melted ingredients.
Once the melted ingredients are cool to touch, you can toss in the candy. Then add the sugar and the cookie crumbs and toss until the ingredients are all coated.
Transfer the ingredients to the baking sheet that you prepared in the first step, evenly spreading out the ingredients.
Once the puppy chow has dried you can serve or transfer it to a container.