In a mixing bowl, beat the eggs, brown sugar, vegetable oil, vanilla extract and apple sauce. Mix until well incorporated.
In a separate bowl, mix together the cinnamon and diced apples.
Sift in the flour, baking soda, salt and baking powder. Stir everything together until it is mixed perfectly.
Once everything is mixed together pour the batter into a greased 8x8 inch loaf pan and bake for 30-40 minutes or until a toothpick inserted in comes out clean.
When it has done baking, remove from the oven and let it cool for 10-15 minutes before enjoying!