Put the apples into a medium saucepan. Add the lemon juice, nutmeg, cinnamon, and brown sugar.
Cook for about 10 minutes, to dissolve the sugar and soften the apples. Allow the apples to cool most of the way before putting the apple trifles together.
While the apple mixture cools, cut the pound cake into cubes.
Put the Cool Whip into piping bag or a zipper storage bag.
To assemble the caramel apple parfait, put a layer of pound cake cubes in the bottom of your serving dish. Add a layer of the apples over the cake. Then add 1 to 2 tablespoons fo caramel sauce followed by a layer of Cool Whip.
Repeat each layer once more and then top with a drizzle of caramel sauce.
Notes
Storage: Store leftover caramel apple cake trifles in the fridge. Cover each cup or bowl tightly with plastic wrap or a lid. They will stay fresh for up to 2 days.