Put the sugar in a deep cake form or tray and caramelize it on the stove, while being careful not to burn it.
Then shake the form to distribute the caramel and leave it to cool a little.
In the meantime, beat all the ingredients for the cream together, best with a mixer, and distribute the resulting mixture over the caramel.
Beat all the ingredients for the cake layer together and pour them into the middle of the form as well, being very careful not to shake the form.
Put the form in a larger container and pour in water up to 2/3 the height of the form containing the dessert.
Put all this in the oven and bake for about 50 min. at 356°F (180 °C). Then take it out and cool.