About this recipe: This sweet and delicious cake has a secret ingredient added... The cake is moist, chocolaty and peanutty - a must for all chocolate and peanut butter lovers.
If you can't find Dr Pepper, Coca Cola works a treat, too.
I made this as a Valentine treat for the husband. Yikes is it SWEET! I left out about 1/4 cup of the sugar and it is still super sweet. If I make it again I might leave out a little more, maybe make it with 1.5 cups instead of the 2 called for...I mean you have DP, marshmallows, and that gooey sugary coating...I doubt the 1/2 cup of sugar will be missed! - 14 Feb 2007 (Review from Allrecipes US | Canada)
I got a request for Dr. Pepper cake. This recipe sounded pretty good so I gave it a try. The cake was sweet and moist. Everyone liked it and there were no leftovers. - 08 Aug 2007 (Review from Allrecipes US | Canada)
I added 1 1/2 tsp. cinnamon to the cake batter as per a similar recipe. Tasted like a moist chocolate cake - could not taste the Dr. Pepper in it. I used a chocolate glaze since I cannot eat peanut butter. Good cake, but don't expect any Dr. Pepper flavor. - 03 Nov 2009 (Review from Allrecipes US | Canada)