1. Preheat the oven to 350°F (175°C) and grease a cake pan.

2. In a mixing bowl, combine the chocolate cake mix, instant vanilla pudding mix, chocolate chips, peanut butter, pure vanilla extract, and required ingredients as per the cake mix instructions.

3. Mix until well combined and pour the batter into the prepared cake pan.

4. Bake in the preheated oven for 25-30 minutes or until a toothpick inserted in the center comes out clean.

5. Let the cake cool before serving.