1. Bring the sugar and water to a boil and cook until the caramel has a nice golden color.
2. Add the heavy cream (be careful of splatters) and stir vigorously immediately.
3. If the mixture is not smooth, place it back on very low heat until the first signs of boiling while stirring.
4. Melt the butter in the mixture while stirring until it becomes smooth.
5. In a bowl, beat the eggs.
6. Gradually add the baking powder, flour, salted butter caramel, and brown sugar to the beaten eggs.
7. Grease a loaf pan and pour the batter into it.
8. Bake in a preheated oven at 210°C (thermostat 7) for 40 minutes.