Preheat the oven to 350°F or 180°C.
Combine flour, baking powder, baking soda, salt, granulated and brown sugar and toasted cashew in a medium bowl and mix together.
In another bowl, mix together zucchini, eggs, lemon zest and juice and vegetable oil.
Add the zucchini mixture to the flour mixture and mix together. Do not over mix the batter since it might end up being tough and chewy.
Pour into prepared loaf pan and sprinkle with cinnamon sugar'
Bake for 45 - 50 minutes or unitl toothpick inserted into the center and comes out clean and dry.
Allow the bread to cool for 10 minutes in the pan before turning it unto cooling rack to cool completely.
Serve and enjoy.