Prepare vanilla cake mix in a 9x13 inch pan. Allow it to cool completely.
Crumble the cooled cake. Press half into a parchment-lined 9x13 dish. Create a firm, compressed base layer.
Spread softened strawberry ice cream over the cake. Freeze for 60 minutes to firm up.
Spread softened vanilla ice cream over the strawberry layer. Return to the freezer for 60 minutes.
Mix crushed cookies, crushed strawberries, and melted butter. Stir until the mixture looks like coarse crumbs.
In a chilled bowl, whip heavy cream, sugar, and vanilla. Whip until stiff peaks form.
Spread the whipped cream frosting over the vanilla ice cream.
Sprinkle the strawberry-cookie crumble over the top. Press down gently to secure the topping.
Cover with plastic wrap. Freeze for at least 4 hours until firm.
Lift the cake out using the parchment paper. Slice with a warm knife to serve.