Source: Bakin' and Eggs
Chewy, Fudgy Triple Chocolate Brownies
(Recipe source Cooks Illustrated, May 2000)
5 ounces semisweet or bittersweet chocolate, chopped
2 ounces unsweetened chocolate , chopped
8 tablespoons (1 stick) unsalted butter, cut into quarters
3 tablespoons cocoa powder (either Dutch-processed or natural cocoa works well in this recipe)
3 large eggs
1 1/4 cups granulated sugar
2 teaspoons vanilla extract
1/2 teaspoon salt
1 cup unbleached all-purpose flour
Adjust oven rack to lower-middle position and preheat oven to 350 degrees. Spray an 8-inch square baking pan with nonstick cooking spray. Fold two 12-inch pieces of foil lengthwise so that they measure 7 inches wide. Fit one sheet in bottom of greased pan, pushing it into corners and up sides of pan. Fit the second sheet in pan in same manner, perpendicular to first sheet. Spray foil with nonstick cooking spray. The foil overhangs will help you lift the brownies out of the pan.
Place a medium heatproof bowl over a pan of almost-simmering water. Melt chocolates and butter, stirring occasionally until mixture is smooth. Whisk in cocoa until smooth. Set aside to cool slightly. Alternatively, you can melt chocolates and butter in a microwave safe bowl. Cook on 50 percent power, stopping to stir ever 30 seconds, until mixture is smooth.
In a separate medium bowl, whisk together eggs, sugar, vanilla and salt until combined, about 15 seconds. Whisk warm chocolate mixture into egg mixture; then stir in flour with wooden spoon until just combined. Pour mixture into prepared pan, spread into corners and level surface with rubber spatula. Bake until slightly puffed and toothpick inserted in center comes out with a small amount of sticky crumbs clinging to it, 35 to 40 minutes.
Completely cool brownies on a wire rack to room temperature, about 2 hours. (This is a very crucial step – I know it’s hard but you have to let them completely cool!) Remove brownies from pan using foil handles. Cut into 1-inch squares and serve. (Do not cut brownies until ready to serve; brownies can be wrapped in plastic and refrigerated up to 5 days.)