Place each color of candy melts in separate bowls that are large enough to mix the cereal in for each color (I like to use deep soup bowls).
Place 1/3 cup powdered sugar in a quart or gallon sized resealable plastic bag.
Melt the lightest color (white) of candy melts in the microwave as per package directions. Stir frequently to encourage melting.
When fully melted, immediately mix in 1 cup of Chex mix. Gently toss with a spoon to fully coat.
Immediately transfer the cereal to the plastic bag with the powdered sugar. Seal and shake. Gently massage the bag from the outside to encourage the cereal to separate, but gentle enough so they do not break.
Pour the bag contents into a sieve (fine mesh strainer) over another bowl. Shake to remove excess sugar.
Pour the cereal out on a parchment paper or silicone baking mat lined baking sheet to dry. If there are any pieces that were stuck together, you can pull them apart, dunk them into the discarded sugar, and shake again.
Let the candy melts that was left behind in the bag dry for a few minutes, then you can crinkle up the bag to remove the candy melts and make it ready for the next color.
Repeat the process with the red candy melts next, using 1 cup of Chex cereal and fresh powdered sugar.
Repeat the process with the blue candy melts next, using 1 cup of Chex cereal and fresh powdered sugar.
Mix the colors together, or keep separate, and serve. The puppy chow can be stored in a container or bag for up to 2 days.
You can use any flavor or variety of Chex cereal that you wish, however rice keeps these gluten free.Start with the lightest color and work towards the darkest just in case any pieces pick up color from a previous batch in the bag.Use any ratio of colors you want. You need 1 cup of cereal for every 1/2 cup of candy melts and 1/3 cup of powdered sugar. I got about 6 cups of cereal in an 12 ounce box after pulling out broken pieces.I like to start melting the next color after I have tossed the previous color in powdered sugar, before shaking in the strainer, to save some time.You can find all of the puppy chow recipes here!Get red candy melts here, royal blue candy melts here, and bright white candy melts here. You can also find them at your local craft store.