• Bring butter and eggs to room temperature
• In a bowl mix together the flour, baking powder and salt
• Preheat oven to 375 degrees
• In a large bowl beat butter for about 30 seconds and then add in peanut butter until well combined Add in brown sugar and granulated sugar, about 1/4 cup at a time
• Beat on medium speed until mixed together well
• Scraping sides of bowl beat for an additional 2 minutes or until fluffy
• Add in eggs, beating well after each one
• Add in vanilla
• Add in flour and milk alternating, beat on low speed after each addition
• Put half of batter into another bowl, add in melted chocolate
• Beat on low until well combined
• Fill lined muffin cups with half peanut butter batter and half chocolate batter
• Fill cup about 2/3 full, 1/3 full of each flavor.
• Use a knife to swirl the batter in each cup
• Bake for 15-18 minutes or until a toothpick comes out clean
• Cool cupcakes before frosting

Peanut Butter Frosting:

• Beat cream cheese, peanut butter and vanilla until light and fluffy
• Gradually add in powdered sugar
• Add milk, 1 tsp at a time until desired consistency
• Divide into two portions
• Set aside one for the Chocolate Frosting

Chocolate Frosting:

• Mix until well combined
• Fill decorating bags with each frosting
• Put both bags into one large bag and add desired tip
• Pipe onto cupcakes