Chocolate Kahlua Cake

Ingredients
1 box Duncan Hines Devil Food Cake mix (without pudding)
1 small box instant chocolate pudding
1 pint sour cream
4 eggs
3/4 cup oil
1/3 cup Kahlua
1 (6 oz) bag chocolate chips
powdered sugar (optional)

Directions
1. Preheat oven to 350 degrees.
2. Blend all ingredients together in a bowl.
3. Spray a bunt pan with non-stick cooking spray or grease and "flour" with cocoa.
4. Turn batter into the pan.
5. Bake at 350 for 45-50 minutes.  The cake will puff up and deflate.
6. Cool 10 minutes, then remove from pan to cool.
7. Sprinkle with powdered sugar or top each slice with a drizzle of Kahlua and a dollop of whipped cream.

Notes
The cake improves as it sits, lasting at least 2 weeks.