Here is the second version of Puppy Chow that I made for Alpha. It is from Your Cup of Cake. I also doubled this recipe and the doubled version is below.
10 cups Rice Chex Mix
3 1/2 cups white chocolate chips
1 1/2 cups powdered sugar
1/2 cup granulated sugar
1 tbs. cinnamon (could have used a bit more)
Measure out Rice Chex and place into a large bowl.
Combine powdered sugar, granulated sugar and cinnamon in a 2.5 gallon ziploc bag
Melt white chocolate chips in the microwave. Be careful, white chocolate scorches easily.
Pour over Chex and stir until coated.
Pour mix into your large plastic bag with the cinnamon/sugar mixture,shake until coated.
Spread on a sheet of wax paper or parchment paper to cool and harden a bit. Store in ziploc containers or bags.
This version was pretty good, but I think it could have used a bit more cinnamon.