I found this recipe on Paula Deen's website. It is simple and it involves a box mix brownie which I always have in my pantry!!
Whip up the brownies according to the directions on the box...
Top with peanut butter chips...
(I was in a rush one day and didn't want to mess with the cupcake liners so I just poured the brownie mix in a 9x13 pan and sprinkled the peanut butter chips on top. Much faster, and they taste the same.)
Peanut Butter Brownie Cupcakes
1 Brownie box mix (18 1/2 oz.)
1 12 oz. package peanut butter chips
Prepare brownie mix according to package directions. Fill the cups half full with brownie mixture.
Place about 1 tbsp peanut butter chips in the center of the batter.
Bake for 18-20 minutes until the cupcakes are set.