In a mixing bowl, combine 8 ounces of softened cream cheese and ½ cup of softened butter. Using an electric mixer, beat them together on medium speed for about 2 minutes until the mixture is smooth and creamy.

Gradually add ¾ cup of brown sugar and 1 teaspoon of vanilla extract to the creamy mixture. Continue to mix on medium speed for another 2 minutes until the brown sugar is fully incorporated.

Gently fold in 1 cup of chocolate chips using a spatula, being careful not to overmix. Optionally, include ½ cup of miniature marshmallows.

If you prefer a creamier texture, add milk gradually until the desired consistency is reached.

Serve immediately or let it chill in the refrigerator for about 30 minutes before serving.