In an 8” square or other 2-quart baking dish melt butter. Into a bowl sift together flour, baking powder, salt, and nutmeg and stie in sugar until combined well. Add milk and whisk batter until it is just combined. Pour batter into melted butter; do not stir. Pour berries into center of batter; do not stir. Bake cobbler in middle of oven for 40 minutes, or until cake portion is golden and berries exude juices.