Black Chocolate Brownies with Marshmallow Spider Webs
Black cocoa powder, a super-dark Dutch-process cocoa, will make these the darkest chocolate brownies you've ever seen. Perfect for Halloween and covering with stretchy melted marshmallows to make tasty, but scary, spider-filled webs. 1 cup unsalted butter, cubed, plus more for the pan 6 ounces semi-sweet Guittard chocolate baking bars, broken into small pieces 1½ cups granulated sugar 1 cup firmly packed dark brown sugar 1½ cups all-purpose flour ¾ cup black cocoa powder 1 ½ teaspoons kosher salt 5 large eggs 1 tablespoon vanilla extract Preheat oven to 350°F. Line a 9x9” baking pan with parchment, letting excess extend over sides of pan and lightly grease with butter. In the top of a double boiler, place the chocolate pieces and the butter. Cook over simmering water, stirring occasionally, until chocolate is melted and mixture is smooth. Turn off heat, and whisk in sugars. Remove from heat, and let cool slightly. In a medium bow...