01 - Beat softened cream cheese in large mixing bowl until smooth and creamy texture achieved.
02 - Add powdered sugar and vanilla extract to cream cheese; beat until fully incorporated and fluffy consistency forms.
03 - In separate chilled bowl, whip cold heavy cream using electric mixer until stiff peaks form and cream holds shape.
04 - Gently fold whipped cream into cream cheese mixture using rubber spatula until smooth and uniform throughout.
05 - Add quartered strawberries, blueberries, and mini marshmallows to cheesecake filling; fold gently until evenly distributed and coated.
06 - Refrigerate mixture for minimum 1 hour to allow flavors to meld and achieve optimal texture.
07 - Serve chilled; optionally garnish with additional fresh berries for presentation.