In a saucepan, bring sugar, cornstarch, salt butter & milk to a gentle boil & cook until thickened about 1-2 minutes. Remove from heat & add extract.
Preheat oven to 350 F. Butter a 13 X 9-inch baking dish; set aside.
In a small dish, combine sugar, cinnamon & nutmeg; set aside. Chop apple pie filling into small pieces. Spread tortillas with a thin layer of caramel sauce. Cover caramel with diced apple filling.
Roll tortillas & place in prepared dish. Brush with butter & sprinkle with sugar mixture. Bake for 15 minutes until golden & bubbling at ends. Serve with ice cream or whipped topping if desired.