01 - Line a 9-inch springform pan with parchment paper to prevent sticking.
02 - Combine crushed cookies, melted butter, and granulated sugar in a medium bowl. Mix until evenly moistened and crumbly.
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 - Mix chopped strawberries with strawberry jam in a separate bowl until evenly coated.
05 - Spread half of the softened vanilla ice cream over the chilled crust, smoothing with a spatula.
06 - Distribute the strawberry mixture evenly over the ice cream layer.
07 - Top with remaining vanilla ice cream and smooth the surface evenly.
08 - Sprinkle remaining crumble over the top and gently press to adhere.
09 - Cover tightly with plastic wrap and freeze for at least 4 hours or until completely firm.
10 - Whip heavy cream with powdered sugar and vanilla extract until stiff peaks form.
11 - Release cake from springform pan, top with whipped cream, and garnish with additional strawberries if desired. Slice and serve immediately.