In a separate bowl, weigh out 250g self-raising flour & 1 tsp baking powder.
Gradually add 2 large eggs to the creamed mixture along with a little of the flour to help absorb the liquid. (I used 3 small eggs instead)
Then mix in the rest of the flour, 2 tbsps of milk and approximately 200g of grated, peeled & de-seeded marrow/courgette/zucchini. (I was overly enthusiastic and added 250g- it worked out fine!)
If you're making it as a loaf cake, cook at 180 degrees centigrade/Gas Mark 4 for approximately 50 mins. Alternatively fairy cakes would take 15-20 mins.
It was very moist & very chocolatey.
The recipe declared that it was best eaten fairly swiftly but that it did freeze well. After we'd tried a slice each we decided that eating it 'fairly swiftly' wasn't going to be a problem....(freezing it- well I'd probably have to make another cake to test that theory...)