This pumpkin marble cake is a perfect dessert for fall or winter. It's made with all-purpose flour, baking powder, salt, unsalted butter, granulated sugar, eggs, vanilla extract, milk, pumpkin puree, cinnamon, nutmeg, and cocoa powder. The cake is moist, tender, and has a beautiful swirl pattern. It's perfect for Thanksgiving or Christmas and can be served with a dollop of whipped cream or a scoop of vanilla ice cream.