Preheat oven to 350 degrees F (175 degrees C). Grease a 9x9 inch baking dish.
In a medium bowl, mix together the flour, baking powder and salt. Add the melted butter and sugar and stir until well blended.
Spread the batter into the prepared baking dish. Spread the blueberries over the batter. Pour the sweetened condensed milk over the blueberries.
Bake in preheated oven for 40 to 45 minutes, or until golden brown.
Interesting Facts
The origin of the name “dump cake” is unknown, but it is believed to be related to the fact that all of the ingredients are “dumped” into the baking dish.
This dessert is popular in the United States, particularly in the South.
The cake can be served warm or cold and can be topped with whipped cream or ice cream.