Cookie Cake

Ingredients (21)

• For the Chocolate Chip Cookie Cake:
• 1 cup all-purpose flour
• 1 cup white whole wheat flour or whole wheat pastry flour
• 3/4 teaspoon baking soda
• 1/4 teaspoon freshly grated nutmeg
• 10 tablespoons unsalted butter
• 2/3 cup packed light brown sugar
• 1/4 cup granulated sugar
• 1 teaspoon kosher salt
• 1 large egg
• 1 tablespoon whole milk*
• 2 teaspoons pure vanilla extract
• 1 1/4 cups semisweet chocolate chips
• Chocolate Fudge Frosting (optional):
• 1 1/2 cups powdered sugar
• 1/4 cup unsweetened cocoa powder
• 6 tablespoons unsalted butter
• 2 tablespoons whole milk*
• 1/2 teaspoon instant espresso powder
• 1 teaspoon pure vanilla extract
• Pinch kosher salt