Malted Dark Chocolate Chip Cookies

Bahan-bahan (24 porsi)

• 1/2 cup (1 stick) unsalted butter, (softened)
• 3/4 cup packed dark brown sugar
• 1/4 cup granulated white sugar
• 1 large egg
• 1/2 tablespoon vanilla extract
• 1 1/4 cups all purpose flour
• 1/4 cup malt powder
• 2 tablespoons unsweetened cocoa powder
• 1/2 teaspoon baking soda
• 1/4 teaspoon cream of tartar
• 1/4 teaspoon salt
• 10 ounces dark chocolate chips, (divided)