Prep the cereal: Pour the Rice Chex cereal into a large bowl.
9 cups Rice Chex cereal
Melt the chocolate: In another bowl, melt the white chocolate chips and butter in the microwave in 30-second intervals, stirring in between, until smooth. Stir in vanilla extract.
1 cup white chocolate chips, 3 tablespoons butter, melted, 1 teaspoon vanilla extract
Coat the cereal: Pour the melted white chocolate over the Rice Chex cereal. Gently mix until the cereal pieces are evenly coated.
1 cup white chocolate chips, 9 cups Rice Chex cereal
Mix the coating: in a large ziplock bag, mix the powdered sugar, crushed freeze-dried strawberries, and strawberry cake mix powder together.
1/2 cup powdered sugar, 1/4 cup freeze-dried strawberries, crushed, 2 tablespoons strawberry cake mix powder
Shake it: Add the coated cereal to the bag and shake vigorously until fully coated with the strawberry mixture.
9 cups Rice Chex cereal
Chill: Spread the Fluffy Strawberry Shortcake Puppy Chow on a parchment-lined baking sheet and let it cool completely.
Serve and enjoy: Once cool, break up any clumps and store in an airtight container. Serve and enjoy this delightful treat!