1 Preheat oven to 350°F. Mix flour, baking powder, cinnamon and salt in medium bowl. Set aside. Mix brown sugar, butter, eggs, vanilla and pecans in large bowl until well blended. Add flour mixture; mix well. Reserve 1 cup of the batter. Spread remaining batter into lightly greased foil-lined 13x9-inch baking pan. Bake 15 minutes or until firm.
2 Microwave caramels and milk in microwavable bowl on HIGH 2 to 3 minutes or until caramels are completely melted, stirring after every minute. Cool 5 minutes or until slightly thickened. Pour over baked layer in pan, spreading to within 1/2 inch of edges. Drop reserved 1 cup batter by spoonfuls over caramel layer. Cut through batter with knife several times for marble effect.
3 Bake 15 to 20 minutes longer or until center is set. Cool in pan on wire rack. Lift from pan. Cut into bars.