Beat the eggs with the sugar until frothy. Bring the butter to the boil together with the milk and pour it into the egg-sugar mixture while it is still hot (!). Mix flour with baking powder and stir in.
Peel and quarter the apples, remove the core and cut into slices.
Grease a baking sheet and dust with flour. Spread the batter on top. Now place the apple slices in rows on the dough and sprinkle with a mixture of sugar and cinnamon.
Bake in the preheated oven at 150 ° C to 175 ° C for approx. 30 - 45 minutes.