In one large ziploc bag, combine vanilla pudding mix and 1/2 cup powdered sugar.
In a second large ziploc bag, combine orange jello mix and 1/4 cup powdered sugar.
Pour 4 cups of the chex cereal into a large mixing bowl.
Melt half (6 ounces) of the white chocolate chips in the microwave until smooth. Pour over the chex cereal and stir until coated. Transfer coated cereal to the vanilla pudding mix bag, seal, and shake until well coated.
Add remaining cereal to the same large mixing bowl you used for the first half. Melt the remaining white chocolate chips in the microwave until smooth. Pour over the cereal and stir until coated. Transfer coated cereal to the orange jello mix bag, seal, and shake until well coated.
In a large bowl, combine the orange chex with the vanilla chex. Enjoy!