Dice the apples and set aside.
In a bowl, combine the apples, sugar, and cinnamon powder, and mix well.
In a separate bowl, mix flour, butter, and sugar by hand until the mixture becomes crumbly to make the crumble dough.
Spread the apple mixture in an oven-safe dish and top with the crumble dough.
Bake in a preheated oven at 180°C for 30 minutes until golden and done.