Heat oven to 325 ° F. Sift together the flour and baking powder. Put aside.
In a bowl, cream the butter. Gradually whisk in the sugar until a smooth consistency is achieved.
Pour in a quarter of the milk and flour. Mix. Repeat until all milk and flour are used up.
Butter a 13 x 9 inch (32 x 22 cm) rectangular pan. Pour the batter. Reserve.
In a saucepan, combine all the ingredients for the sauce. Bring to a boil and let boil for a few moments.
Pour the sauce over the dough. Do not mix.
Bake at 325 ° F for 45 minutes.