Preheat the oven to 375°. Grease and flour a 9x13 inch pan.
Add the oil, sugar, and brown sugar to a large bowl. Mix until the ingredients are well combined.
Crack the eggs into the bowl and continue to mix.
Peel and dice the apples. They should be cut into ½ inch pieces, or into chunks.
Add the apples, flour, salt, cinnamon, vanilla, and baking powder to the bowl and mix everything until it is fully combined.
Add the batter to the prepared 9x13 inch pan and spread out the batter so it is evenly distributed. Bake for 45 minutes or until a toothpick is inserted and comes out clean.
Allow the cake to cool before serving. Enjoy!