In a separate bowl, whisk together the flour, baking powder, and cinnamon. Gradually add this mixture to the wet ingredients, stirring until smooth and lump-free.
Step 4: Add the Apples
Fold the apple pieces gently into the batter until evenly distributed.
Step 5: Bake
Pour the batter into a greased baking dish or cake pan. Bake in a preheated oven at 180°C (350°F) for about 35–40 minutes, until golden brown and a toothpick inserted into the center comes out clean.
Step 6: Serve
Let the cake cool slightly. Dust with powdered sugar or serve warm with a spoonful of yogurt or whipped cream.