Peel and chop 3 apples, then place them in a wide saucepan.

Squeeze the juice of 1 lemon and add it to the saucepan.

Add 80g sugar to the saucepan and stir over medium heat for 4-5 minutes until the apple sauce is ready.

In a mixing bowl, combine 400g flour, 150g sugar, and 16g baking powder.

Add 2 eggs and 120g softened butter, then mix with a fork or spatula until crumbly.

Prepare a 26cm round cake pan by lining it with parchment paper. Press half of the dough into the bottom and slightly up the sides.

Spread the apple sauce evenly over the dough, then sprinkle the remaining dough on top.

Bake in a preheated oven at 180°C for 35-40 minutes until golden brown.