Here's How to Make Kate Middleton's Favorite-Ever Holiday Dessert

Ingredients

• Sauce
• 1½ packed cups dark brown sugar
• 1 cup unsalted butter
• ½ cup plus 1 tablespoon heavy cream
• Pudding
• 1 cup plus 2 tablespoons chopped dates
• 1 teaspoon baking soda
• 1 cup granulated sugar
• 4 tablespoons unsalted butter
• 1 large egg
• 1 teaspoon pure vanilla extract
• 2 cups plus 2 tablespoons all-purpose flour
• 1 teaspoon baking powder
• Whipped cream, clotted cream or ice cream, for serving