Peanut Butter Chocolate Chip Cupcakes

1 cup unbleached all purpose flour
     1 tsp baking powder
     1/4 tsp salt
     6 tbsp unsalted butter, at room temperature
     3/4 cup smooth all natural peanut butter, at room temperature
     1/2 cup packed brown sugar
     1/2 cup sugar
     2 large eggs
     1 tsp vanilla extract
     1/2 cup whole milk
     2 cups semi-sweet chocolate chips

Peanut Butter Frosting
     6 ounces unsalted butter, room temperature
     1/2 cup confectioners' sugar
     1/2 tsp salt
     1 cup creamy peanut butter, natural (or if you want a smoother look, go not-natural)
     1/2 tsp pure vanilla extract
     1/2 cup whole milk

For Cupcakes:

Preheat oven to 350 degrees F.