Wash the apples, core them, and cut them into small pieces. For sweet varieties, it's recommended to sprinkle them with lemon juice, then sprinkle with cinnamon and toss.
Turn on the oven so that it has time to heat up to 170–180 °C.
Beat the eggs and sugar in a blender. Blend at maximum speed for 7-8 minutes. This will ensure the charlotte is airy and prevent it from settling after baking.
Reduce mixer speed to low and gradually add flour, sifting it first.
Stop whisking only when dry flour is no longer visible.
Add apples to the finished dough.
Line the sides and bottom of the pan with parchment paper. If the paper is of good quality, you won't need to grease it. Otherwise, use butter or vegetable oil. For taller baked goods, use a pan with a diameter of 20–20 cm.
Place the dough into the pan and distribute the apples evenly throughout.
Place the dough in a preheated oven and bake for about 40 minutes.
After the specified time, check the charlotte for doneness by piercing it with a wooden skewer. The absence of raw dough indicates the pie is ready.
If the charlotte is still half-raw, but the top has already browned nicely, you need to cover it with foil.
Remove the finished pie from the oven, let it cool, slice, and serve. If desired, dust the charlotte with powdered sugar.