Pre-heat oven to 350. Place pyrex 8x12 pan with 1 tablespoon butter in oven while mixing batter. Bake in 8x12 pan with melted butter for 20 min at 350. While puff is baking, slice 2 to 4 peaches depending on size. Sugar to taste. Set aside. In a one quart sacuepan on low heat, place either 2 cups of blueberries or 1 cup of blue berries and black berries. Add 1/2 cup sugar (or to taste) mixed with 1 tablespoon cornstarch. Bring to boil stirring frequently to prevent burning, remove from heat. When puff is finished baking, slice into 4 to 6 servings and top with fresh peaches and bludeberry compote. Serve immediately.