Foryoueats: Boston Cream Pie

Ingredients

• For the Pastry Cream Filling:
• 1¾ cups whole milk
• 2 tablespoons unsalted butter
• 4 egg yolks
• ⅔ cup sugar
• ¼ cup cornstarch
• ¼ teaspoon salt
• 2 teaspoons vanilla extract
• 1 tablespoon rum
• For the Cake Layers:
• 1 cup cake flour, spooned into measuring cup and leveled off
• 1 teaspoon baking powder
• 3 large eggs, at room temperature
• 2 large egg yolks, at room temperature
• ¾ cup sugar
• 1 teaspoon vanilla extract
• ¼ cup whole milk
• For the Soaking Syrup:
• ¼ cup water
• ¼ cup sugar
• For the Chocolate Ganache Topping:
• ½ cup heavy cream
• 4 oz bittersweet chocolate, chopped