Caramelized Apple Cinnamon Cake

• For the Apple Filling:
  • 5 medium apples (670g, approx. 3 cups, sliced)
  • 1 tablespoon lemon juice
  • 2 tablespoons granulated sugar (40g)
  • 1/4 teaspoon ground cinnamon
• For the Cake Batter:
  • 5 tablespoons butter (100g, softened)
  • Pinch of salt
  • 5 tablespoons granulated sugar (100g)
  • 8g vanilla sugar (approx. 1 1/2 teaspoons)
  • 2 medium eggs (each 63g)
  • 4g baking powder (approx. 1 teaspoon)
  • 400g all-purpose flour (approx. 3 1/4 cups)
  • 1 egg yolk (for brushing)
  • Powdered sugar, for dusting (optional)

Directions

1. Prepare the Apples:
   Peel, core, and slice the apples. Toss with lemon juice, 2 tablespoons sugar, and cinnamon. Set aside.
2. Prepare the Cake Batter:
   • In a large bowl, cream together the softened butter, salt, sugar, and vanilla sugar until smooth and fluffy.
   • Add eggs one at a time, mixing well after each addition.
3. Combine Dry Ingredients:
   Sift together flour and baking powder. Gradually add this mixture to the wet ingredients to form a smooth dough.
4. Assemble the Cake:
   • Roll out the dough to fit a 51×36 cm baking pan.
   • Arrange the apple mixture evenly over the dough. Brush with egg yolk.
5. Bake:
   Preheat oven to 180°C (350°F) and bake for 45-50 minutes or until golden brown.
6. Finish and Serve:
   Dust with powdered sugar before serving if desired. Serve warm or at room temperature.