Preheat your oven to 200 degrees (fan-forced) and lightly grease 2 x 6 shallow cupcake trays.
Grate the cheddar and parmesan cheesed set aside until needed.
Grate the zucchinis into a large bowl and then add the eggs, wholemeal flour, onion flakes (if using) grated cheeses and salt and pepper and mix with a spoon to combine.
Divide the mixture between the trays and cook for 12 - 15 minutes or until golden.