Name: The Best Chewy Brownies
Prep time: 10 min
Cook time: 40 min
Total time: 50 min
Yield: Yields 1 (9 by 13-inch) pan, or 2 dozen (2-inch) brownies
Ingredients: Butter, to grease the dish; ½ cup (45 g) natural (not Dutch-processed) unsweetened cocoa powder (see note below); 1½ teaspoons instant espresso powder; ½ cup plus 2 tablespoons (150 ml) boiling water; 2 oz (58 g) unsweetened chocolate, finely chopped (see note below); 4 tablespoons (58 g) butter, melted; ½ cup plus 2 tablespoons (150 ml) canola oil; 2 large eggs; 2 large egg yolks; 2 teaspoons pure vanilla extract; 2½ cups (500 g) sugar; 1¾ cups (250 g) unbleached all-purpose flour; ¾ teaspoon fine salt; 1/16 teaspoon baking soda; 1 cup (100 g) shelled walnuts or pecans, chopped (optional)