Preheat the oven to 350 degrees.
Melt the butter in a 9x9 baking dish as the oven preheats.
In a medium bowl, combine the sugar, flour, salt and baking powder.
Once blended and smooth, pour dry ingredients over melted butter.
Add the milk and stir together until well mixed.
Pour the peaches over the top, evenly distributing the fruit through out. Do not stir.
Sprinkle the cup of blueberries over the peaches.
Bake for 1 hour.
Crust will rise to the top and cover fruit!
Enjoy alone or with Vanilla ice cream!