Stir together flour, baking powder, sugar, and salt in a bowl. Cut in butter until mixture is crumbly. Stir in milk and mix until a batter forms that is thick enough to be scooped with a spoon. Allow batter to rest for 3 to 5 minutes. Drop batter by spoonfuls into boiling stew or soup. Cover and simmer without lifting the lid for 15 minutes. Serve. Serve hot and enjoy!