Step 1: In a large bowl, measure out the Chex cereal and set aside.
Step 2: In a microwave-safe bowl, combine the white chocolate chips and unsalted butter. Microwave in 30-second intervals, stirring after each, until smooth and melted. Be careful not to overheat the white chocolate, as it can seize.
Step 3: Stir the vanilla extract into the melted white chocolate mixture.
Step 4: Pour the melted white chocolate over the Chex cereal. Gently fold with a rubber spatula until the cereal is evenly coated.
Step 5: In a large zip-top bag or a very large bowl with a lid, combine the powdered sugar, finely crushed freeze-dried strawberries, and vanilla wafer/Golden Oreo crumbs. Shake or whisk briefly to combine.
Step 6: Add the chocolate-coated cereal to the bag/bowl with the sugar mixture. Seal the bag (or cover the bowl tightly) and shake vigorously for 1-2 minutes, until all the cereal pieces are thoroughly coated with the powdery mixture. This is the fun part of making easy strawberry shortcake puppy chow!
Step 7: Spread the easy strawberry shortcake puppy chow onto a parchment-lined baking sheet to cool and set for about 10-15 minutes. This helps prevent sticking and ensures a crisp texture.
Step 8: Once cooled, transfer the easy strawberry shortcake puppy chow to an airtight container. Sprinkle with the remaining 2 tablespoons of crushed freeze-dried strawberries for an extra pop of flavor and color.
Step 9: Serve immediately or store for later enjoyment. This easy strawberry shortcake puppy chow is best enjoyed within a few days for optimal freshness.