A few weeks ago I made Puppy Chow for myself, and I was trying to figure out ways to make it without chocolate chips and peanut butter (you can buy allergy-friendly chocolate chips, but I have never introduced them to Little Z, and probably won't until he is a bit older). This is what I came up with. It is easier to make than regular Puppy Chow; Although it is not quite as delicious as the original, it is a nice second, and Little Z loved it. He scarfed it down, getting powdered sugar and cocoa powder all over himself in the process.
I don't really provide great measurements because I just “eye ball” it.
Rice or Corn Chex Cereal
Canola Oil (a few Tbl Sp – just enough to lightly coat the cereal when drizzled over it)
powdered sugar (contains corn; see here for a corn-free recipe)
With a spoon, drizzle canola over the cereal, while mixing to lightly coat all the cereal. Once cereal is coated, sprinkle cocoa powder over the cereal using a sifter. Once the cereal is coated with the cocoa powder, sift powdered sugar over the cereal and mix until coated. Seal in an airtight container.