Preheat oven to 180 C and lightly grease a 1.5 litre bread tin.
Place dry ingredients in a mixing bowl.
Combine the maas, eggs, oil and sweetcorn. Mix into the dry ingredients until well blended.
Spoon into the bread tin. Bake for 45-60 minutes or until a skewer comes out clean.
Allow to cool in the pan for a few minutes. Turn out onto a cooling rack.
Grate 2-3 baby marrows and add to the mixture. Stir ¼ cup grated cheese, preferably reduced fat, into the batter or sprinkle half on top.