Heat oven to 350°F (175°C).
Lightly grease your baking dish.
In a bowl, mix flour, sugar, baking powder, salt.
Add milk, melted butter, and vanilla. Mix well.
Pour this batter into your baking dish.
In a second bowl, mix white sugar, brown sugar, and cinnamon.
Sprinkle this sugar mix over the batter.
Slowly pour hot water over everything. Don’t stir it.
Bake for 40 to 45 minutes.
Let it cool for 10 minutes before serving.