Follow these simple steps to assemble your Apple Crumble Ice Cream Cake:

1. Prepare Apple Filling:
– In a large bowl, mix sliced apples, granulated sugar, lemon juice, cinnamon, and nutmeg. Let it sit while you prepare the crumble.

2. Make the Crumble Topping:
– Preheat your oven to 350°F (175°C).
– In a medium bowl, combine flour, oats, brown sugar, and cinnamon.
– Cut in the cold butter until the mixture resembles coarse crumbs.
– Spread the crumble mixture on a baking sheet and bake for 25-30 minutes until golden.

3. Cook Apples:
– In a medium saucepan, cook the apple mixture over medium heat for 10-15 minutes, until the apples are tender. Allow to cool completely.

4. Assemble the Cake:
– Line a 9-inch springform pan with plastic wrap for easy removal.
– First, add a layer of the apple mixture at the bottom.
– Then, add a layer of softened vanilla ice cream, spreading it evenly.
– Sprinkle a layer of crumble topping over the ice cream.

5. Repeat Layers:
– Continue layering with apple filling, ice cream, and crumble until you reach the top of the pan. Finish with a final layer of crumble.

6. Freeze:
– Cover the cake with plastic wrap and freeze for at least 4 hours or overnight for best results.

7. Serve:
– Remove the cake from the freezer about 10 minutes before serving to soften slightly.
– Carefully remove the sides of the springform pan and transfer to a serving platter.
– Whip the heavy cream until soft peaks form and decorate the top as desired.

8. Cut and Enjoy:
– Slice into wedges and serve immediately. Enjoy the layers of flavor and the delightful crunch of the topping.