Peel and core the apples. Cut them in thin slices, put them in a bowl and sprinkle with lime or lemon zest. Add cinnamon and 1 tablespoon sugar, and stir to combine.
Put the apple slices in a greased 9 inch baking pan. Add some blueberries.
In another bowl put brown sugar, flour, eggs, vegetable oil, and vanilla.
Combine with a spatula or a wire whisk, and pour over the apples.
Bake for 55 minutes or until golden.
Serve warm or at room temperature with whipped cream, and blueberries.
Recipe by PERU DELIGHTS at https://perudelights.com/the-easiest-apple-cake-recipe-i-know/