With the cupcakes, I am all about semi-homemade. I used a boxed cake mix, added chocolate chips, and then made the peanut butter frosting from scratch.
The frosting recipe is from an amazing woman I used to work with. She would make a chocolate cake with peanut butter frosting for everyone's last day (we had one colleague who faked several last days to get more cakes-lol).
Here's the best peanut frosting I have ever had:
Peanut Butter Frosting
1/2 cup peanut butter
1 lb. 10x sugar (powdered sugar)
7-8 tbs milk
1 tsp vanilla
Blend sugar and peanut butter. Alternatively, add sugar and milk. Add vanilla and beat until smooth.