Prepare the filling. Mix grated apples with sugar, lemon juice and cinnamon.
Prepare the dough. Sift the flour. Beat the eggs with sugar for 10 minutes with a mixer. Gradually add flour, baking powder and vanilla sugar. Mix thoroughly. The consistency of the dough should be like thick sour cream.
Bake the roll. Line a baking sheet with parchment paper and grease with vegetable oil. Spread the filling evenly on it. Put the dough on top and smooth it out carefully. Bake in an oven preheated to 180˚C for 15-20 minutes. Do not overdry. After baking, carefully place the cake on a towel with the filling facing up and, while still hot, roll it into a roll.