TBT Recipe: Fudgy Mocha Bars from Dorie Greenspan - Cooking by the Book

Ingredients

• 1 ¾ cups (238 grams) all-purpose flour
• ¼ cup (21 grams) unsweetened cocoa powder
• 1 ½ tablespoons ground espresso or coffee beans (or instant)
• ¾ teaspoon baking powder
• ¼ teaspoon baking soda
• 1 ½ sticks (12 tablespoons; 6 ounces; 170 grams) unsalted butter, cut into chunks, at room temperature
• 1 ¼ cups (250 grams) packed light brown sugar
• ⅔ cup (134 grams) sugar
• ½ teaspoon fine sea salt
• 2 large eggs, at room temperature
• 2 teaspoons pure vanilla extract
• 1 cup (6 ounces; 170 grams) finely chopped chocolate (semisweet, bittersweet or milk)
• 1 cup (120 grams) finely chopped walnuts