Preheat oven to 375°F. Open the stick of butter and rub it over the bottom and sides of a 9x13 inch dish. Set aside the butter for later. Open the jars of peaches and pour into the baking dish. Pour the cake mix directly over the peaches. Mix the cake mix into the peach syrup so all powder is dissolved. Mix the sugar, cinnamon and nutmeg together and sprinkle evenly over the top. Slice your butter into little pats and spread them on top. Bake for about 40 minutes, until a golden color. Serve warm with ice cream or cold with whipped cream.