My daughter is a true Gemini and she loves both Angel food and Devil's food. What goes better with chocolate than caramel? Exactly!! But you can make a peanut butter drizzle or vanilla or even chocolate if you prefer.
Preheat oven to 350 degrees. Spray a Bundt pan and then sprinkle with cocoa.
Mix cake mix, sour cream, butter, eggs, half and half, and vanilla till smooth. Fold in chocolate chips and nuts if you are using. Pour into prepared pan, level off, and tap pan.
Bake at 350 for 50-60 minutes until done. Let cool in pan for 20 minutes. Then remove from pan and make drizzle.
To make drizzle, add all ingredients into saucepan except for vanilla. Bring to a bubble and simmer for a couple of minutes stirring constantly. Remove from heat, stir in vanilla. Pour into mixing bowl and beat this on high for 5-10 minutes. Spoon over cake. Can sprinkle with some nuts if preferred.