Preheat oven to 350 degrees and grease a 9X5-inch loaf pan.
In a large bowl, mix together flour, baking powder, baking soda, salt, and apple pie spice.
In another bowl, whisk together both sugars, sour cream, eggs, and vanilla extract until well blended.
Pour wet ingredients into dry and stir until there are no streaks of flour. Fold in apples.
Pour batter into prepared pan. Bake in oven for 50-55 minutes. Cool in pan 10 minutes and then remove to a wire rack to cool completely.
In a small saucepan, bring butter, brown sugar, and whipping cream to a boil, stirring frequently. Boil for 1 minute. Spoon over bread and sprinkle with pecans.