This cupcake was a last minutes idea to clear the bottle of homemade peanut butter. The preparation was very fast easy. I just mix all sift flour together, add the wet ingredients, fold in the chocolate chips and 2 tbsp of peanut butter to swirl. Then i sent the mixture into a preheated oven and bake at 170 for 20 minutes. OMG! The peanut butter was heavenly and when it was done the aroma was very strong. My DH loves it very much and refuse to give any to his colleague.