Preheat your oven to 200 degrees C.
Melt the butter in a non-stick pan.
Add the apple pieces, sugar, vino cotto, cinnamon and cardamom to the pan and mix well.
Put the lid onto the pan and let the mixture simmer for 5 minutes, just to soften the apples slightly.
In the meanwhile prepare the crumble.
Add all the ingredients, except for the butter, and mix well.
Rub the grated butter (I use my microplane grater) with your fingertips into the topping mixture. It will be very crumbly.
Fill the apples into an oven proofed dish and top with the crumble mixture.
Sprinkle the remaining 2 Tbsp sugar over the top and bake for 25 to 30 minutes.
You can dust the top with icing sugar and serve the crumble warm with vanilla ice cream or vanilla custard.