Preheat the oven to 375℉
Measure out 4 cups berries into a bowl. Add your Sugar and stir to evenly coat the berries.
Let berries sit, stirring occasionally, until the sugar is fully adhered to the berries and the some juice begins to show in the bottom of the bowl.
While berries are "soaking" in the sugar, in a separate bowl, combine the flour, baking powder, salt and milk. (NOT the butter) Using a hand mixer, blend until well combined and a batter forms.
After batter has formed and is well mixed, then beat in the melted butter. Blend until the batter thickens.
Spread batter on the bottom of the unbuttered baking dish.
Once batter is spread in bottom of dish, arrange the sugared berries on top of the batter
Take care to arrange evenly and fill in all of the gaps
Pop in the preheated oven. Bake 45-55 minutes until the dough rises up through the berries and is golden brown.