Place apples, sugar, cinnamon, nutmeg, and water in a saucepan.
Stir until well blended and cover and cook on medium stirring frequently for 10 minutes or until apples are semi soft.
If needed, thicken sauce using 1 Tbsp of cornstarch to 3-4 Tbsp of water. Mix into sauce and stir until thickened.
Heat oil on medium heat in a skillet and holding the tortilla folded in half, place the bottom on tortilla in the oil for a few seconds. Then lay it on one side until browned and then place other side down until browned. Remove from oil and Sprinkle browned tortilla with sugar-cinnamon mixture.
Fill taco shells with apple pie filling and top with whipped cream, and sprinkle a little more of sugar-cinnamon mixture on top.