Sprinkle in a pinch of salt and beat with a hand mixer.
Add the flour mixed with the baking powder and mix until smooth and well combined.
Grease the baking pan with butter, then pour in half of the batter. Add the coarsely grated, well‑drained apples in an even layer. Pour the remaining batter on top.
Bake at 355 °F (180 °C) for about 25 minutes. Dust the cake generously with powdered sugar. Enjoy!