In a mixing bowl, sift dry ingredients well. Add remaining ingredients except melted butter. Mix until batter is well combined using a whisk. Fold in melted butter and pour into a 9 by 13-inch baking pan. Bake in preheated oven for 45 minutes or until golden brown. Cut into 3-inch squares and serve with Caramelized Pineapple.
In a saucepan, melt butter and brown sugar. Add vanilla. Fold in diced pineapple and continue to cook until mixture has thickened.