Knead a uniform dough from flour, butter, egg yolks, baking powder, powdered sugar, and cream.

In the meantime, prepare the apples.

Peel the apples, remove the core, dice them, and stew in a pot with sugar and a little water - until the fruit softens and starts to break down (if you have ready-made apples in jars, you can use them). You can add lemon juice or cinnamon to taste.

Remove the chilled dough from the refrigerator, spread the apples on it, and bake the whole thing at 170 degrees (fan-assisted) for 20 minutes.

In the meantime, prepare the meringue.

Finally, add potato starch and vinegar or lemon juice - mix gently.

Spread the meringue over the pre-baked crust, and sprinkle chopped nuts on top.

Continue baking the cake for another 25 minutes.