Malted Chocolate Stout Cake

Ingredients

• For the CakeMagic Cake Mix:
• 2½ cups all-purpose flour
• 1½ cups sugar
• ¾ teaspoon baking soda
• ¾ teaspoon baking powder
• 1 teaspoon table salt (see Note)
• For the Cake:
• Unsalted butter, at room temperature, for greasing the pans
• ½ cup sifted unsweetened cocoa powder, plus extra for dusting the pans
• 4 cups dry Cake Magic! Cake Mix (ingredients listed above), whisked well before measuring
• ¼ teaspoon baking soda
• ¾ cup full-fat plain yogurt (preferably not Greek yogurt)
• 1 cup (2 sticks) unsalted butter, melted and cooled, or 1 cup vegetable oil
• 1 cup brewed espresso, cooled
• 4 large eggs, at room temperature
• For the Stout Syrup:
• ½ cup sugar
• ½ stout beer, such as Guinness
• Pinch of ground nutmeg
• Pinch of salt
• For the Malted Milk Chocolate Frosting:
• 1½ cups (3 sticks) unsalted butter, at room temperature
• ¾ cup malted milk powder
• Pinch of salt
• 4 cups (one 16-ounce box) confectioners’ sugar
• 1 teaspoon pure vanilla extract
• 4 ounces semisweet chocolate, melted and cooled