In a bowl, mix the flour, sugar and almond powder.
Add the soft butter.
IMPORTANT: The butter must be soft but not melted. Mix until the dough has a sandy consistency.
Add the egg. Knead the dough and form a ball.
Put the ball of dough in cling film and place it in the refrigerator for one hour.
For the tarte
Preheat the oven to 175°C.
Roll out the dough with a rolling pin and form a circle of about 30 cm. Place the dough on a buttered or greaseproofed pie tin. Bake the dough for 10 min.
Peel the apples, remove the seeds and cut the apple quarters into thin strips.
Spread the apple compote on the tart base. Cover with apple slices.
Melt the butter, add the sugar and cinnamon. Pour the butter over the apples.