In a large mixing bowl, add the Rice Chex cereal.

In a microwave-safe bowl, melt the white chocolate chips in 30-second intervals, stirring until smooth.

Pour the melted white chocolate over the Rice Chex and gently mix until evenly coated.

In a separate bowl, combine the strawberry cake mix and powdered sugar.

Add the cake mix mixture to the coated Rice Chex and stir until well combined.

Spread the puppy chow mixture onto a baking sheet lined with parchment paper.

Sprinkle the crushed freeze-dried strawberries and optional sprinkles over the puppy chow.

Allow to cool and set for about 10 minutes before serving.