Martha Cupcakes Challenge #20- Peanut butter filled chocolate cupcakes

Next up in the challenge: peanut butter filled chocolate cupcakes. I am going out of order from the book to better utilize the ingredients I have on hand.
The batter was more like brownies than cake, very thick and prepared the same way. The peanut butter filling was a little too thick, it needed more liquid. The recipe says to dollop 2 tbsp chocolate, then 1 tbsp peanut butter, then 1 tbsp chocolate and then 1 tsp pb. I just eyeballed it, and ended up not putting the pb on top. It worked out ok, cuz on some you can see the pb peeking thru anyways.
The recipe says to bake for 40 minutes, but that seemed like a really long time, so I checked after 20 and they were almost done. Even baking for 5 more minutes seemed like enough. I can't imagine what they'd be like if I baked them the whole time!

Here's the inside, yummy pb filling inside a dense chocolatey cake. Martha does not frost hers, so I won't either, altho a dark chocolate frosting or ganache would be good.
These are essentially peanut butter swirl brownies, but in cupcake form. yummy!