Prepare the Cream Cheese: Ensure the cream cheese is fully softened to room temperature. This step is crucial for achieving a smooth, lump-free dip. Place the softened cream cheese into a large mixing bowl.

Beat the Cream Cheese: Using an electric hand mixer or a stand mixer fitted with the paddle attachment, beat the cream cheese on medium speed until it is completely smooth and fluffy (about 1 to 2 minutes). Scrape down the sides of the bowl as needed.

Incorporate the Marshmallow Fluff: Add the entire jar of Marshmallow Fluff and the vanilla extract to the bowl. Continue mixing on medium speed until the marshmallow fluff and cream cheese are fully combined and the mixture is light, airy, and uniform in texture (about 2 to 3 minutes).

Adjust Sweetness (Optional): If you prefer a sweeter dip or a slightly stiffer consistency, add the sifted powdered sugar now and mix on low speed until just combined. Be careful not to overmix.

Adjust Consistency (Optional): If the dip seems too thick or difficult to scoop, add the milk or heavy cream, one tablespoon at a time, mixing briefly after each addition until your desired dipping consistency is reached.

Chill the Dip: Transfer the finished dip into a serving bowl. Cover the bowl tightly with plastic wrap and refrigerate for at least 30 minutes. Chilling allows the flavors to meld and the dip to firm up slightly.

Serve: Serve the Marshmallow Cream Cheese Fruit Dip cold alongside your favorite fresh fruits (like berries, grapes, or pineapple) and crispy cookies.