COCOA BROWNIES
Makes 16 to 25 brownies
http://www.thetarttart.com/2013/03/alice-medrichs-cocoa-brownies/

Ingredients:
10 Tbsp (1-1/4 sticks) unsalted butter
1-1/4 cups sugar
3/4 cup plus 2 Tbsp unsweetened cocoa powder (natural or Dutch-process)
1/4 tsp salt
1/2 tsp vanilla extract
2 cold large eggs
1/2 cup all-purpose flour (unsifted, measured by stirring briefly, spooning into the measuring cup until it’s heaped above the rim, then leveling it with a straight-edged knife or spatula — it should weigh nearly 2.5 ounces)
2/3 cup walnut or pecan pieces (optional—I didn’t use them)

Directions:
Preheat oven to 325 degrees F. Line an 8″ square pan (I used a 9″, which resulted in slightly flatter brownies) with parchment paper so that there is an overhang on each side.

Let a skilletful of water come to a gentle simmer. In a heatproof bowl, place the butter, sugar, cocoa powder, and salt, and place it in the skillet. Stir while the butter melts. Once the mixture is hot, remove the bowl from the skillet and let it cool until it’s only warm. Using a wooden spoon, stir in the vanilla, then stir in the eggs, one a time, vigorously. Once the batter looks shiny and well-blended, stir in the flour until no streaks remain. Vigorously beat the batter for 40 strokes. Stir in the nuts if using. Spread the batter evenly into the pan, then place it into the oven.

Bake until a toothpick in the middle comes out slightly moist with batter, 20 to 25 minutes (in my 9″ pan, it took about 20 minutes). Remove and let cool completely before lifting out of the pan and transferring to a cutting surface. Cut to your desired size.