Sweet apples and maple syrup team up with spiced rum for a taste of the islands in this easy and delicious warm saucy dessert. In small saucepan, over medium heat, whisk together water, sugar, maple syrup, butter and rum until sugar is dissolved and butter is melted, about 3 minutes. Set rum sauce aside. Grease 8-cup (2 L) shallow baking dish. In large bowl, combine flour, sugar, baking soda and salt. In small bowl, stir together milk and butter; pour over dry ingredients and stir to combine.