Combine the pudding mix with the pineapple and its juice in a large mixing bowl until it thickens into pudding. Make sure there are no more clumps of powder remain in the mixture.
Next, with a rubber spatula fold in the cool whip until fully combined, be careful not to making to overmix.
Then add the mini marshmallows, coconut shreds, and chopped nuts to the pudding mixture mix in gently.
Refrigerator for 2-4 hours to allow the fluff salad to set and the marshmallows to soften, while in the fridge it will bring together all the flavors.
When you are serve mix in the chopped pretzels. If you at them in prior they will get soggy.
Garnish with more toppings if desired and serve chilled.
Christina's Notes
Chill Time: It is important to allocate time for the pineapple fluff with pretzels to chill in the fridge. I recommend at least 2 hours and even overnight. It really is more flavorful the longer it sits!
Homemade Whipped Cream: Homemade whipped cream is so easy to make and uses minimal ingredients, if you could like swap the cool whip and make your own, use this recipe from Lemon Tree Dwelling.
Don't Over Mix: When you are folding the whipped cream into the pudding mix, it is crucial that you fold gently and don't over mix as it will cause this pineapple pretzel fluff to loss some of its airiness, resulting in a heavier and denser consistency.