01 - Line a 9-inch springform pan with parchment paper, ensuring the paper extends up the sides for easy removal later.
02 - In a medium bowl, combine crushed cookies, melted butter, and granulated sugar. Mix until evenly moistened and texture resembles wet sand.
03 - Press half of the crumble mixture firmly into the bottom of the prepared pan, creating an even layer. Place pan in freezer for 10 minutes to set.
04 - In a separate bowl, combine chopped strawberries and strawberry jam. Stir thoroughly until all strawberries are evenly coated.
05 - Spread half of the softened vanilla ice cream over the chilled crust, using an offset spatula to create an even layer.
06 - Spoon the strawberry mixture evenly over the ice cream layer, distributing fruit across the entire surface.
07 - Top with remaining vanilla ice cream, smoothing the top surface with a spatula for a flat, even finish.
08 - Sprinkle remaining crumble mixture evenly over the top, gently pressing to adhere without compressing the ice cream.
09 - Cover pan tightly with plastic wrap and freeze for at least 4 hours, or until completely firm throughout.
10 - Before serving, whip heavy cream with powdered sugar and vanilla extract using an electric mixer until stiff peaks form.
11 - Release cake from springform pan, top with whipped cream, and garnish with additional fresh strawberries if desired. Slice immediately and serve cold.