01 -
Crush the dried apple chips into fine crumbs with a food processor or rolling pin. Stir them with the powdered sugar and apple pie spice in a medium bowl.
02 -
Add the white chocolate, dulce de leche, and butter to a microwave-safe bowl. Microwave in 20-second bursts, stirring after each burst, until smooth and glossy.
03 -
Stir the vanilla and salt into the warm caramel mixture. If it feels too thick to pour, microwave for 10 more seconds and stir again.
04 -
Place the cereal in a very large bowl. Pour the caramel mixture over the cereal and fold gently until the pieces are evenly coated.
05 -
Transfer the coated cereal to a large zip-top bag. Add the apple sugar mixture, seal, and shake until the cereal is fully coated and no longer sticky.
06 -
Spread the puppy chow on a parchment-lined sheet pan for 10-15 minutes. Store in an airtight container at room temperature for 1 day or in the refrigerator for up to 1 week.