Preheat the oven to 350°F. Spread the chopped macadamia nuts in a single layer on a baking sheet. Toast for 4-6 minutes. Cool completely.
In a medium mixing bowl mix together the pudding mix, crushed pineapple, and condensed milk, Stir until the instant pudding has dissolved. (Do not drain the crushed pineapple)
Fold in the maraschino cherries, marshmallows, whipped topping and toasted macadamia nuts until fully combined. Reserve about 1/2 cup whipped cream and 1 Tbsp of nuts for garnishing.
Cover and chill for at least 4 hours before serving.
Garnish with additional whipped cream, reserved nuts and maraschino cherries, if desired.
Notes
Instant Pudding: If you're unable to find instant coconut cream pudding mix use instant cheesecake pudding mix or instant white chocolate pudding mix, adding 1-2 teaspoons of coconut extract and 1 loosely packed cup of shredded flaked coconut. You could use instant vanilla pudding mix in a pinch, making the same adjustments.
Nut Substitutions: In keeping with the island theme I use macadamia nuts for this fluff recipe. You can swap those out for pecans or walnuts, if preferred.
Flavorings: You could add one teaspoon rum extract for a pina colada fluff flavor.