Ingredients

  • 6 ounces bittersweet chocolate (not unsweetened)
  • 8 tablespoons unsalted butter (1 stick)
  • 2 large eggs, at room temperature
  • 1 cup granulated sugar
  • 1 tablespoon unsweetened cocoa powder
  • 1 teaspoon vanilla extract
  • 1 teaspoon brewed espresso (optional)
  • 1/4 teaspoon plus 1/8 teaspoon fine salt
  • 1 cup all-purpose flour

Method

  • Heat the oven to 350 degrees F and arrange a rack in the middle.
  • Line an 8-by-8-inch glass baking dish with aluminum foil.
  • Combine the chocolate and butter in a medium saucepan and cook over medium-low heat, stirring frequently, until evenly melted.
  • Remove from the heat and let cool to room temperature.
  • Combine the eggs, sugar, cocoa powder, vanilla, espresso (if using), and salt in a large bowl and briefly stir until just evenly incorporated.
  • Add the cooled chocolate and mix until uniform in color.
  • Add the flour and stir until just incorporated (no white streaks should remain).
  • Transfer the batter to the prepared baking dish and bake until a tester inserted into the center of the brownies comes out clean, about 25 to 30 minutes.
  • Remove from the oven and let cool completely before cutting.