01 -
In a large mixing bowl, combine the apple pie filling, mini marshmallows, sweetened condensed milk, drained pineapple chunks, chopped walnuts, sour cream, and cinnamon. Stir gently until all ingredients are evenly distributed.
02 -
Add the thawed Cool Whip to the bowl and use a rubber spatula to gently fold it into the mixture. Use a folding motion rather than stirring to maintain as much air in the Cool Whip as possible, which keeps your fluff light and fluffy.
03 -
Cover the bowl with plastic wrap or transfer to an airtight container. Refrigerate for at least 2 hours, or overnight if possible. This chilling time allows the flavors to meld and the marshmallows to soften slightly.
04 -
When ready to serve, sprinkle the top with additional chopped walnuts and a light dusting of cinnamon if desired. Keep chilled until serving time, and return any leftovers to the refrigerator promptly.