Mast Brothers Chocolate Peanut Butter Cookies

Okay this one's a keeper!  I found this recipe by way of the infamous Mast Brothers.  My mom, who is in town visiting & giving me an extra set of hands at this busy time, doesn't know who the Mast Brothers are (??!!).  The explanation I gave her, is that they are bearded hipster brothers from NYC who are reinventing the craft of chocolate production and distribution.  They make their chocolate in small artisanal batches, and sell them in unique packages, with original flavour combinations.  They're like celebrities of fashionable chocolate trade that is booming, and how can you not have heard of them, right?!
The chocolate inspired recipes that they've created are featured in their recently published: Mast Brothers Chocolate: A Family Cookbook and are beautifully represented, and absolutely drool-worthy.  I'm totally trying out their recipe for Chocolate Gingersnaps at Christmastime, and they have a recipe for Chocolate Blueberry Pie, that would be a perfect vehicle for the blueberry's that are currently in season!

I made these Chocolate Peanut Butter Cookies to bring along on a recent camping trip with my folks, and my dad has been relentlessly harassing me for this recipe ever since.  I refused to give him the recipe outright, and told him he'd have to wait for me to have time to make another batch, and have time to take pictures, before I would post it, or he could have it.  Hahaha, I'm SO mean, I made him wait like 4 weeks!!

These cookies have the perfect marriage of chocolate and peanut butter that are everyone's favourite, in a creation that is not overly sweet,  full of dark chocolate chunks and salty chopped peanuts.  Yum-O!  Now that I've shared the recipe with you lucky bums, and finally with my dad, you can go get your bake on!

Mast Brothers Chocolate Peanut Butter Cookies
Recipe Adapted From: Mast Brothers Chocolate:A Family Cookbook; Page 69

3/4 cup butter, room temperature
1 cup brown sugar
1 cup peanut butter
1 egg
3/4 cup flour
1/3 cup cocoa powder
1 teaspoon baking powder
3/4 cup dark chocolate (or chips), finely chopped
1 cup peanuts, chopped

(Recipe halved from the original, 'cuz that's too many cookies for one fam to eat.  Double if making to share!).
Preheat oven to 350 F.
Using a large bowl, or stand mixer, cream the butter, & peanut butter, together with the brown sugar, and eggs.  Meanwhile in a small bowl measure out the flour, cocoa powder, baking soda, and add all at once to the butter mixture.  Mix until just combined.  Finally add in the chopped chocolate, and peanuts, and stir or mix, until combined.
Bake for 10-12 minutes or until bottom is browned, but centre remains soft.  Transfer cookies to a wire rack to cool. Store in air-tight container.

Enjoy!