Apple Cake with Lemonade

INSTRUCTIONS

• 1
  Grease a 23 cm diameter springform pan with butter and dust with coarse flour.
• 2
  Sift the flour together with the baking powder. Separate the egg yolks from the whites; whisk the egg whites with salt into a firm snow. Cream the butter with brown and vanilla sugar until foamy, add the egg yolks and beat until a lighter, dense foam forms. Fold in the flour and lemonade, and finally, very gently, the egg white snow. Spread the batter evenly in the pan and smooth the surface.
• 3
  Peel the apples, cut them into quarters, and remove the core. Slice each quarter lengthwise into slices so that they don't completely fall apart, but just slightly fan out. Arrange the apples on top of the cake and gently sprinkle with brown sugar.
• 4
  Bake for 45 minutes in an oven preheated to 170°C with a fan. Check if the dough is baked through with a skewer. After baking, let it cool in the pan. Before serving, dust with powdered sugar.