Ingredients

• 2 cups hazelnuts (about 10 ounces), skins removed (see Note below), coarsely chopped
• 2 cups all-purpose flour
• 1 cup (2 sticks) unsalted butter, room temperature
• 1 cup granulated sugar
• 1/2 cup packed light-brown sugar
• 2 large eggs
• 3 tablespoons instant espresso powder (do not use instant coffee)
• 1 teaspoon baking soda
• 1 teaspoon salt