Turn oven on to 350 degrees to preheat.
Place 1/2 stick of butter in an 8X8 inch baking pan and place the pan in the oven to melt the butter.
Place the flour, 1/2 cup of sugar, and baking powder into a small bowl and mix well.
Add milk to flour mixture and mix well until a thick batter is formed.
Remove the pan from the oven, the butter should be melted. If not, leave it in for a minute or two longer to melt it.
Pour the batter over the melted butter, and smooth it out so that it reaches the edges of the pan.
Arrange blueberries evenly on top of the batter.
Sprinkle the remaining two tablespoons of sugar on top of the berries.
Place the cobbler in the oven at 325 degrees and bake for 45 - 60 minutes until the crust is golden brown.