In a small bowl stir together flour, baking powder, and salt. Set aside.
In a large bowl, beat sugar, eggs, butter, vanilla, cinnamon, and nutmeg until smooth. Once incorporated, add flour mixture and stir until blended.
Stir in apple pie filling, caramel sauce, and milk with a spatula until fully incorporated.
Pour batter into lined muffin tins, not filling higher than ⅔ full.
Bake at 350 for 18-20 minutes or until a toothpick comes out clean.
Let cool completely before frosting.
To make icing, beat together all ingredients until smooth and fluffy.
Refrigerate for 15 minutes, then pipe onto cupcakes.
Sprinkle with cinnamon, and serve. Enjoy!