To take a baking-pan low of diameter of about 22 centimeters, to line only the base with the oven paper and to heat the oven up to 170° C. In a small bowl to mix the dates, the courgettes, the raisins and the honey. To use another bowl to climb on margarine together with the sugar. To mix the egg with 2 spoons of water and to stir again until the all doesn't become shiny. In this last bowl to dust with the flour and with the yeast mixing with a spatula. To pour the all in the baking-pan and to level with the spatula. To bake for 50-55 minutes until the cake doesn't become firm, swollen and gilded. To detach the cake from the baking-pan with a knife and to upset on an enough capacious dish. Once removed the paper, the cake must be let cool before having served.