Preheat your oven to 350°F (175°C). Grease and flour a 9x13-inch baking pan or line it with parchment paper.
In a large mixing bowl, whisk together the flour, sugar, baking powder, ground cinnamon, and salt.
In a separate bowl, beat the eggs. Add the vegetable oil and vanilla extract, and mix well.
Pour the wet ingredients into the dry ingredients and stir until just combined.
Fold in the chopped apples, ensuring they are evenly distributed in the batter.
Transfer the batter to the prepared baking pan and spread it evenly.
Bake in the preheated oven for 40-50 minutes or until a toothpick inserted into the center comes out clean.
Allow the cake to cool in the pan for about 15-20 minutes, then transfer it to a wire rack to cool completely.
Once cooled, cut into squares or slices and enjoy your delicious homemade fresh apple cake!