Creating these bars is a straightforward process that will fill your home with the inviting aroma of fall spices.

1. Preheat your oven to 350°F (175°C) and line an 8×8 inch baking pan with parchment paper, allowing some overhang for easy removal.
2. In a bowl, combine the crushed chocolate cookies and melted butter. Press this mixture firmly into the bottom of the prepared pan to form the crust.
3. In a large mixing bowl, beat the cream cheese and sugar together until smooth and creamy, about 2-3 minutes.
4. Add the egg, pumpkin puree, cinnamon, nutmeg, ginger, and vanilla extract to the cream cheese mixture. Mix until fully incorporated.
5. Pour the pumpkin cheesecake mixture over the prepared crust, spreading it evenly.
6. Melt the dark chocolate chips in a microwave-safe bowl in 30-second intervals, stirring in between, until smooth.
7. Drizzle the melted chocolate over the pumpkin layer. Use a knife or a skewer to swirl the chocolate into the pumpkin mixture, creating a marbled effect.
8. Bake in the preheated oven for 35-40 minutes, or until the center is set. Allow to cool completely in the pan on a wire rack.
9. Once cooled, refrigerate for at least 2 hours before cutting into bars. This helps the flavors meld and makes cutting easier.