This recipe can be found here:
http://www.kingarthurflour.com/shop/RecipeDisplay?RID=1146493248892Once again, this recipe is from King Arthur Flour's recipe archive. Although the recipe says that these will taste like a girl scout 'thin mint', I feel that the taste of the mint filling more closely resembles that of a Peppermint Patty.
Now, onto the brownies!
Mint Filling
4 cups (16 ounces) confectioners' sugar
*If these seems to you like it's a LOT of powdered sugar...you are correct! I mixed all of the other ingredients together first and added the powdered sugar 1/2 cup at a time to reduce the amount of painful hand-mixing6 tablespoons (3 ounces) unsalted butter
*If you want to soften the butter quickly, 10 seconds in the microwave will give you easily blendable butter6 tablespoons (2 5/8 ounces) vegetable shortening
*I used Crisco1/4 teaspoon peppermint oil, or 1 to 2 teaspoons peppermint extract (to taste)
*I couldn't find peppermint oil at any of my local grocery stores, and so I bought peppermint extract. I'm not really sure if it makes a difference at all. I used two teaspoons and it was a delightfully minty taste1/4 cup (1 ounce) King Arthur Unbleached All-Purpose Flour or Signature Secrets Culinary Thickener (3/4 ounce)
*This is 1.5 tablespoons. Why the recipe didn't state it like that is beyond me.6 tablespoons (3 ounces) heavy cream
*Do NOT substitute any lighter milk product for this. Your filling will melt more willingly if you don't use heavy cream.To make the mint filling:
Beat the filling ingredients together till they're cohesive-the mixture will be the consistency of stiff cookie dough.
*By cohesive, they really mean to say that you will never believe all of that powdered sugar will at some point stick together. It will. Just keep beating.Spread the filling, on a piece of lightly greased plastic wrap, into a rectangle just slightly smaller than a 9" x 13" pan-this is most easily done on the outside bottom of a 9" x 13" pan that you've covered with plastic wrap.
Cover the filling with wrap, and refrigerate overnight, or till thoroughly chilled.
*I recommend the full overnight chill. It will help to fully thicken the mint filling.Brownie Batter
1 cup (2 sticks, 8 ounces) unsalted butter
*Again, soften in the microwave.
1 pound (about 2 generous cups) brown sugar
*The domino 1lb boxes of brown sugar hold more or less 2 cups, so you can use one of those if you want. This is a ridiculous amount of brown sugar, in my opinion. It could probably be cut back to 1.5 cups easily. More on this later.1 cup (4 ounces) Dutch-process cocoa
*It is very important to note here that the recipe specifies Dutch-process cocoa. This means that the acidity has been neutralized in the cocoa. It won't, therefore, react with baking soda (which is why baking powder is used instead). The other note is that the taste of these two cocoas is very different. The brownies will be much richer using regular unsweetened cocoa. If you do not have Dutch process cocoa on hand:Substituting Unsweetened Cocoa for Dutch-Process Cocoa - 3 tablespoons (18 grams) Unsweetened Cocoa Powder plus a pinch (1/8 teaspoon) baking soda. There are roughly 16 tablespoons in a cup. I believe you can leave out the baking powder if using this conversion.1 teaspoon salt
1 teaspoon baking powder
1 tablespoon vanilla extract
4 large eggs
1 1/2 cups (6 1/4 ounces) King Arthur Unbleached All-Purpose Flour
2 cups (12 ounces) chocolate chips
Preheat the oven to 350°F. Lightly grease a 9" x 13" pan.
To make the brownie batter:
In a medium-sized microwave-safe bowl, or in a saucepan set over low heat, melt the butter, then add the sugar and stir to combine.
*I am not sure how you would do this in a microwave...I recommend stove top. This is a LOT of brown sugar and requires a lot of stirring.Return the mixture to the heat (or microwave) briefly, till it's very hot, but not bubbling; it'll become smooth and shiny looking.
The sugar and butter will separate; that's OK, just stir till some of the butter has been reabsorbed.
*I didn't have any problems here with the butter/sugar ratio.Heating this mixture a second time will dissolve more of the sugar, which will yield a shiny top crust on your brownies; very attractive, should you choose not to cover the brownies with ganache.
Stir in the cocoa, salt, baking powder, and vanilla.
Whisk in the eggs, stirring till smooth; then add the flour and chips, again stirring till smooth.
*So this whole, "stirring until smooth" thing doesn't exactly work when you're putting 1.5 cups of flour and 2 cups of chocolate chips into an already thickening mixture of 1lb brown sugar, butter, etc. This becomes extraordinarily difficult to stir. It's kind of like stirring cement, or possibly taffy. Especially once you add the chocolate chips in, it gets really tough to mix by hand. Also, it does not tell you in the recipe, but "stir until smooth" after adding the chocolate chips just means to mix them in thoroughly. They are not going to melt into the batter. It will be lumpy.Spoon half the batter (about 28 ounces) into the prepared pan.
*Make sure you do not use more than half of the batter here. It's important to be able to cover all of the mint filling with the rest of the batter.Using the plastic wrap as a sling to move the filling, slide it atop the batter.
Top with the remaining batter.
Bake the brownies for about 40 minutes, until a cake tester inserted into the center comes out clean, or with just a tiny amount of crumb clinging to it.
*40 minutes is perfect hereRemove the brownies from the oven, and cool them completely before icing with ganache.
*Cool completely really means COOL COMPLETELY. Do NOT cut into these brownies when they are still warm, or your mint filling will spill out to the side and run along the bottom of you pan, making the bottom half of your brownies mushy and soggy. Eww!I did not ice these with ganache. The brownies are more than adequate without additional chocolate icing put onto them.Allow the icing to set before cutting and serving the brownies.
Yield: 2 dozen brownies.
Chocolate Ganache Icing
2 cups (12 ounces) chocolate chips or chopped semisweet or bittersweet chocolate
1 cup (8 ounces) heavy cream or whipping cream
In a microwave-safe bowl, or in a small saucepan set over medium heat, heat the cream till it's very hot.
You should see wisps of steam beginning to rise from it, and some very tiny bubbles around the edge.
Add the chocolate to the cream, and stir till smooth.
Don't panic—at first, the mixture will look disarmingly soupy, but just keep stirring.
Very shortly it'll become a rich brown, thick, shiny spreadable icing.
Yield: 2 cups icing.
These brownies were very tasty, although they were little too sweet for me personally, which is why I think the whole 1lb brown sugar idea is way too much. The brownies seemed more sweet than rich...I would almost recommend using your own brownie recipe for this and just adding in the mint-filling step. These definitely should be served with a glass of milk on the side.
Also, make sure to cover these tightly when storing. They will dry out very quickly otherwise.
Coming soon: Alfajores!
http://en.wikipedia.org/wiki/Alfajor