Step 1

Food Safety Step: Preheat oven to 350 degrees F. Spread cake mix out on a baking sheet and bake for 5 minutes. Allow cake mix to cool completely before using.

Step 2

In a microwave-safe bowl, add white candy melts and heat in the microwave for 1 minute, then stir. Continue to heat in the microwave for 30 second intervals until candy is soft. Using a whisk or a fork, stir candy until smooth.

Step 3

Add Chex cereal to a 13 quart mixing bowl. Pour melted white chocolate on top and gently stir with a spatula until all Chex cereal is coated.

Step 4

Sprinkle about 2-3 tablespoons of sprinkles on top of coated Chex, then gently toss once. Add another 2-3 tablespoons and toss again. Continue to do this until all sprinkles have been used, but be careful not to overmix - you don't want the candy melt to begin covering the sprinkles. Set bowl aside.

Step 5

Set a baking sheet nearby and cover with parchment paper.

Step 6

Add white cake mix and powdered sugar to a Ziploc bag (gallon sized), seal the bag, then give it a thorough shake to combine the sugar and cake mix. Once mixed, reopen the bag.

Step 7

Working in batches (about 1-2 cups at a time), add coated Chex cereal to the bag with white cake mixture, seal or twist the top of the bag closed, and then shake the bag until the Chex cereal is coated with the white cake mixture. Remove finished funfetti puppy chow and spread out on prepared baking sheet. Repeat step until all the puppy chow is made. When finished, discard plastic bag and any dry white cake mixture that remains inside.

Step 8

Let funfetti puppy chow cool completely before eating. Once cooled, transfer to a sealed container and store for up to 5 days.