Tip: Make sure no grainy crystals remain at the bottom of the bowl. If the gelatin isn’t fully dissolved, the finished fluff may turn out gritty instead of smooth and creamy.
Step 2: Initial Chill
Add the 1/2 cup of cold water and stir to combine. Refrigerate the mixture for about 20 minutes. You want it to thicken slightly into a syrup-like consistency, but not fully set into firm Jell-O.
Step 3: Adding the Cheesecake Element
Remove the bowl from the refrigerator and whisk in the dry instant cheesecake pudding mix until fully blended and smooth.
Tip: Cheesecake pudding adds a light tang that better replicates the creamy component of a Creamsicle compared to plain vanilla. Chill again for another 20 minutes until the mixture reaches a thick, custard-like texture.
Step 4: Folding Everything Together
Using a rubber spatula, gently fold in the thawed whipped topping, drained mandarin oranges, and marshmallows.
Golden Rule: Avoid vigorous stirring. Use a gentle lifting and turning motion to preserve the airiness—overmixing will deflate the fluff and make it runny.
Step 5: Final Chill
Cover and refrigerate for 1 to 2 hours. This allows the marshmallows to soften slightly and gives the flavors time to blend together fully.
