Beat together the eggs. Get a frying pan, place over a moderate heat and put in a knob of butter and 4 tablespoons sugar and swirl until melted and beginning to bubble. Throw in the bananas. Cook for 3 - 4 minutes turning halfway, until golden. In another pan melt 25g butter. Dip 8 slices raisin and rosemary bread into the egg mix and cook in a pan for 2 minutes each side. Serve with spoonfuls of crème fraiche, banana syrup and more bananas.