The absolute cinco de mayo dessert if you ask me!
Give the chocolate batter one last good stir. Pour half of it in the buttered baking dish. Place this in a preheated oven at 356°F (180°C) for 15 minutes. Then remove it from the oven. Let the brownie cake cool for 10 minutes. Then spread the dulce de leche on top of it. Top with the rest of the chocolate batter (and extra dulce de leche if you like). Bake the brownies for another 20 minutes in the hot oven. Let them cool down at room temperature. Slice the brownies up and serve.