Italian Apple Cake with Sour Cream

Preheat the oven to 180°C (350°F) and grease a cake pan.
In a bowl, whisk together eggs, sugar, and melted butter until smooth. Add sour cream and vanilla extract, and mix well.
In a separate bowl, combine flour, baking powder, cinnamon, and salt. Gradually fold the dry ingredients into the wet mixture.
Gently stir in the chopped apples.