In a medium mixing bowl, beat the softened cream cheese with an electric mixer on medium speed until smooth and fluffy.
Add the marshmallow fluff and beat on low speed until fully combined.
Add the Cool Whip and beat on low speed until the mixture is light, smooth, and fully combined.
Serve at room temperature or chill until ready to serve. Great with strawberries, apple slices, grapes, pineapple chunks, graham crackers, or vanilla wafers.
Notes
Storage: Store the dip in an airtight container in the refrigerator for 3 to 4 days. For the best texture, give it a quick stir before serving chilled or at room temperature. This dip does not freeze well. The texture changes significantly after freezing and thawing, so it's best to enjoy fresh from the fridge.*Cool Whip recommends thawing the whipped topping in the refrigerator for 4 hours.