FOR THE BROWNIES: – 9 ounces bittersweet chocolate, roughly chopped – 3/4 cup unsalted butter – 3/4 cup granulated sugar – 1/2 cup firmly packed light brown sugar – 3 large egg – 1 & 1/2 teaspoons vanilla extract – 1 & 1/2 cups all-purpose flour – 1/2 teaspoon salt FOR THE COOKIES: – 1 & 1/4 cups all-purpose flour – 1/2 teaspoon baking powder – 1/4 teaspoon salt – 1/2 cup unsalted butter, softened – 3/4 cup granulated sugar – 1 large egg – 1/2 teaspoon vanilla extract – 1/2 cup semisweet chocolate chip