8tablespoonsunsalted butter, cut into quarters1 stick
3tablespoonscocoa powdernatural or Dutch-processed
3large eggs
1 ¼cupssugar8 ¾ ounces
2teaspoonsvanilla extract
½teaspoontable salt
1cupunbleached all purpose flour5 ounces
Instructions
Adjust an oven rack to the lower-middle position and heat the oven to 350°F. Line an 8-inch square baking pan with two pieces of foil that extend beyond the edges of the pan (to serve as handles to lift the cooled brownies out of the pan). Spray the foil with vegetable oil spray.
Melt the chocolates and butter in a medium heatproof bowl set over a saucepan of barely simmering water (or in the top of a double boiler), stirring occasionally, until smooth. Whisk in the cocoa powder until smooth. Set aside to cool slightly.
Whisk the eggs, sugar, vanilla, and salt together in a medium bowl until combined, about 15 seconds.
3 large eggs, 1 ¼ cups sugar, 2 teaspoons vanilla extract, ½ teaspoon table salt
Whisk the warm chocolate mixture into the egg mixture. Using a wooden spoon, stir in the flour until just combined.
1 cup unbleached all purpose flour
Transfer the batter to the prepared pan. Using a spatula, spread the batter into the corners and smooth the surface. Bake until slightly puffed and a toothpick or wooden skewer inserted into the center of the brownies comes out with a few moist crumbs attached, 35 to 40 minutes.
Cool the brownies on a wire rack to room temperature, about 2 hours.
Loosen the edges with a paring knife and lift the brownies from the pan using the foil extensions. Cut the brownies. The cut brownies can be wrapped in plastic wrap and refrigerated for up to 5 days.
Notes
America's Test Kitchen recommends cutting the brownies into 64 1-inch pieces. I wanted larger brownies and cut them into 16.Source: Adapted from The Complete America's Test Kitchen TV Show CookbookYou're Gonna Bake It After Allbakeitafterall.com