To a medium sized mixing bowl, add the tablespoon of sugar, baking powder, flour, and salt. Whisk together until evenly combined.
Add the butter to the bowl, and cut in using a pastry cutter or a fork.
Once th butter's completely incorporated and the mixture's crumbly, add the milk and stir to form the dough. Don't overmix.
In a large skillet set over medium heat, stir together the berries, remaining sugar, and water until evenly mixed.
Bring the mixture to a boil, stirring occasionally.
Using a tablespoon and working quickly, drop spoonful's of the dumpling batter evenly out into the bubbling berry mixture. It will get crowded by the end, that's ok.
Once all the dumplings have been dropped into the skillet reduce the heat to a low simmer.
Cover and let the dumplings cook for 20-25 minutes, or until the dough's cooked through. Do not stir.
Take a large dumpling out, cut it open and check the center to be sure. Remove the skillet from heat.
Serve warm over vanilla ice cream or with vanilla extract infused, freshly whipped cream.