Bake this irresistible Post Office Cake at home. Made with butter, eggs, oil and oranges. Easy step-by-step instructions included.
This Post Office Cake relies on simple, everyday ingredients such as duncan hines butter cake mix, eggs, oil and mandarin oranges with juice. It comes together quickly and makes 4 servings, at about 563 kcal each. The step-by-step instructions below are written to be easy to follow, even on a busy day.
Whether you're rounding off a family dinner, bringing a treat to a gathering, or simply satisfying a sweet craving, this Post Office Cake delivers. Serve it warm or at room temperature, and add a scoop of ice cream or a spoonful of whipped cream for an extra-special finish.
Updated Jun 30, 2026