Step 1

Using an extra-large mixing bowl, add in the 10 cups of Rice Chex. Set it aside.

Step 2

Using a medium-size heat-safe mixing bowl, add the chocolate chips, peanut butter and butter. Microwave for 45 seconds. Stir and continue heating in 20-second intervals, stirring after each interval until the mixture is smooth.

Step 3

Pour the chocolate mixture over the rice Chex. Stir until all of the Chex are completely coated.

Step 4

Pour the coated Chex and the powdered sugar into a 2-gallon Ziploc baggie. Shake to completely coat the puppy chow.

Step 5

Line 2 baking sheets with parchment paper.

Step 6

Divide the puppy chow between the puppy chow between the 2 baking sheets. Allow the puppy chow to rest for 20 minutes.