Add into a pan with the vanilla, cinnamon and sugar and heat on a low heat until the sugar dissolves.
Turn the heat up and cook the apples for 4-5 minutes until they have began to soften.
Pour into a bowl and leave to cool completely.
Crumble
Preheat the oven to 200ºc/180ºfan and line a large tray with parchment paper
Add the flour, sugar and butter into a bowl and rub the ingredients together to form breadcrumbs
Pour the mixture onto the lined tray, and bake for 10-15 minutes, moving the mixture about frequently to prevent catching and to make sure it bakes evenly. Cool completely.
Ice Cream
Pour the double cream, custard and condensed milk into a large bowl and whisk together until smooth and starting to thicken
Assembly
In layers, pour some of the ice cream mix, the apples, and crumble and swirl as you go.
I top with some of the apples and more crumble mixture
Freeze for at least 5-6 hours, or until frozen solid.
Notes
This will last for 3+ months in the freezer
You can swap the apple to pretty much any other fruit that you like in a crumble - just because to not over stew other fruits.