For The Cake: Orange Cake Mix | Vanilla Instant Pudding Mix | Vegetable Oil | Sour Cream | Milk | Eggs For The Frosting: Unsalted Butter | Powdered Sugar | Salt | Vanilla Extract | Heavy Whipping Cream or Milk | Sweet Orange Marmalade
Start by mixing the batter. Then, bake the cake.
Make the frosting next. Layer and cover the cake with frosting, then serve.