Dark Chocolate Muffins 1 pkg Duncan Hines Double Fudge Cake mix 1 15oz can pumpkin puree (not pumpkin pie mix) 6 oz dark chocolate chips Preheat oven to 375. In a large bowl, combine cake mix and pumpkin with electric mixer. Add chocolate chips. Spray mini-muffin pan with non-stick spray. Scoop batter into mini-muffin pan and bake for 15-20 min until set.