For the Crumble: Mix by hand all ingredients until get an even wet sand texture.
Spread in a tray evenly in a thin layer.
Oven 180°C x for approx. 15 minutes. Stir every 5 minutes for even cooking. Sometimes it takes longer.
Fill: Peel the apples and cut them in small cubes.
Cook them in a casserole for a couple of minutes in low heat until they release a little juice.
Add brown sugar and mix gently to not break the apple cubes.
While cooking the apples cook white sugar in a pan until get caramel.
Add the Rum to the apples.
When the apples start to get softer add them the caramel and keep mixing gently.
Let it rest.
Serve: In a small container put the apple mix hot.
Over them put the crumble. It's recommended to toast a little more the crumble. You can use a torch or whatever you prefer.
Finish with a spoon of icecream.
Enjoy!