[header] How to make a chocolate layered reeses peanut butter cup birthday cake [title] Preheat oven to 350ºf/180ºc. [title] In a stand or electric mixer, add the cake mix, eggs, oil, water, sour cream, pudding mix and chocolate chips. [step] Beat until well combined, about 1 1/2 minutes. It will be thick. 
[title] Pour evenly into well greased cake pans. [step] Bake for 30-35 minutes or until toothpick comes out clean from center of cakes.