Preheat the oven to 400°F and line two baking sheets with parchment paper. Cut each tortilla into 8 wedges.
Brush the tortilla wedges with melted butter and sprinkle them with the granulated sugar and cinnamon. Bake for 7 to 9 minutes, turning once, until crisp and golden.
Melt 2 tablespoons of butter in a skillet over medium heat. Add the diced apples, brown sugar, cinnamon, and lemon juice, then cook for 5 to 6 minutes until almost tender.
Stir the cornstarch with the water until smooth. Add it to the apples and cook for 1 minute, until the juices become thick and glossy.
Arrange the cinnamon crisps on a serving platter and spoon the warm apple topping over them.
Add small scoops of vanilla ice cream, drizzle everything with salted caramel sauce, and finish with chopped pecans.