01 - Line a 9-inch springform pan with parchment paper to prevent sticking and ensure easy removal.
02 - Combine crushed cookies, melted butter, and granulated sugar in a medium bowl. Mix until evenly moistened and sandy in texture.
03 - Press half of the crumble mixture firmly into the bottom of the prepared pan to form an even crust. Freeze for 10 minutes to set.
04 - Combine chopped strawberries and strawberry jam in a separate bowl. Stir thoroughly to coat all strawberries evenly.
05 - Spread half of the softened vanilla ice cream over the chilled crust, using an offset spatula to create an even layer.
06 - Distribute the strawberry mixture evenly over the first ice cream layer, ensuring coverage to the edges.
07 - Top with remaining ice cream, smoothing the surface with a spatula for a flat, even finish.
08 - Sprinkle remaining crumble evenly over the top and gently press to adhere without compacting the ice cream.
09 - Cover tightly with plastic wrap and freeze for at least 4 hours or until completely firm throughout.
10 - 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 frozen.