In a large mixing bowl, beat the softened cream cheese, granulated sugar, and vanilla extract until smooth and creamy.
Gently fold in the whipped topping using a spatula until combined.
Add the sliced strawberries, mini marshmallows, and pound cake cubes to the mixture.
Fold the ingredients carefully to ensure the cake cubes remain intact and are evenly coated.
Cover the bowl and refrigerate for at least 1 hour before serving to allow the flavors to meld.
Serve chilled, optionally garnished with additional fresh strawberry slices.