Preheat your oven to 350°F (175°C). Grease and flour a 9-inch round cake pan.

In a large mixing bowl, whisk together the dry ingredients: all-purpose flour, granulated sugar, baking powder, salt, and ground cinnamon.

In a separate bowl, beat the eggs until fluffy, then gradually add in vegetable oil and vanilla extract. Blend until smooth.

Fold in the chopped apples into the wet mixture using a spatula.

Gradually add the wet mixture to the dry ingredients, stirring gently until just combined.

Pour the batter into the prepared cake pan and smooth the top evenly.

Bake in the preheated oven for 30-35 minutes, until golden brown and a toothpick comes out clean.

Let the cake cool in the pan for about 10 minutes before transferring to a wire rack to cool completely.