Preheat your oven to 350°F (175°C).
Prepare the baking dish with butter and brown sugar.
Arrange the sliced bananas on top of the caramel layer.
In a mixing bowl, cream together the butter and granulated sugar.
Add eggs one at a time, mixing well after each addition.
Stir in the vanilla extract.
In another bowl, whisk together the dry ingredients.
Alternate adding the dry ingredients and milk to the wet mixture.
Pour the batter over the bananas in the pan.
Bake for 35-40 minutes or until a toothpick comes out clean.
Allow the cake to cool for a few minutes before inverting it.
Invert the cake onto a serving plate.
Serve warm or at room temperature.