In a medium bowl, use a hand mixer to combine the cream cheese and powdered sugar. Add the hot fudge and mix until combined. Set aside.

In a separate small bowl, heat the marshmallow creme until it’s less thick and easier to spread (about 25-30 seconds in the microwave). Layer the chocolate mixture and marshmallow creme in a serving dish in alternating layers. If you’d like to swirl the layers, drag a knife through the layers or stir slightly.

Top with mini marshmallows, graham cracker pieces, or chocolate bar pieces if desired. Serve at room temperature or slightly warmed. Store leftovers in the refrigerator for up to 3 days.