Preheat oven to 180 C. Put all the wet ingredients in one bowl and whisk together well. I usually leave out the zucchini to mix with flour. It prevents zucchini sinking to the bottom of the pan.
Sieve the 2 flours into another bowl and add the rest of the dry ingredients to that bowl, mix well.
Add the dry ingredients to the wet ingredients and stir until just combined, do not over mix or it will be tough.
Line a baking dish with baking paper). Tip the batter into the loaf tin/baking dish and even out the top.
Bake for 30 minutes then remove from the oven and sprinkle over a thin layer of grated cheese.
Return to the oven for 5 minutes or until a cocktail stick stuck in the middle comes out clean. Leave to cool slightly before removing from the tin.