Chocolate Kahlua Cake

Step 1
Preheat the oven to 350 degrees F (175 degrees C). Grease a fluted tube pan (such as Bundt) with floured cooking spray.

Step 2
Combine cake mix, sour cream, eggs, coffee-flavored liqueur, oil, pudding mix, orange zest, and cinnamon in a large bowl; beat with an electric mixer on medium speed until very smooth, about 4 minutes. Fold in chocolate chips. Pour batter into the prepared tube pan.

Step 3
Bake in the preheated oven until a toothpick inserted into the center comes out clean, 50 to 60 minutes.

Step 4
Remove from the oven and cool in the pan for 10 minutes. Invert cake onto a plate and remove from pan; let cool completely, about 30 minutes.

Step 5
Dust with confectioners' sugar to serve.