Preheat oven to 180°C (160°C fan-forced).
In a large bowl, combine zucchini, onion, bacon, cheese, sifted flour, oil, and lightly beaten eggs. Season with salt and pepper.
Pour into a well greased lamington tin (16cm x 26cm).
Bake for about 30-40 minutes, or until well browned.
Cut into squares and garnish with parsley, if desired, before serving.
