Preheat oven to 350°F and spray a 9x13 baking pan with baking spray.
Mix cake mix, strawberry gelatin, eggs, butter, and milk with a hand mixer until smooth (about 2 minutes).
Pour batter into the prepared pan and bake for 28-30 minutes, or until a toothpick comes out clean.
While the cake bakes, crush the cookies in a food processor to make crumbs.
Blend freeze-dried strawberries into a powder and mix with the cookie crumbs.
Drizzle melted butter over the crumbs and stir to combine. Let the mixture dry on wax paper for 20-25 minutes.
Beat cream cheese, butter, and salt until smooth. Slowly add powdered sugar and milk to achieve desired frosting consistency.
Once the cake is cooled, spread the cream cheese frosting on top and sprinkle with the strawberry crunch topping. Refrigerate until ready to serve.