Bake this irresistible Rhubarb Upside-Down Cake at home. Made with rhubarb, sugar, cake mix and jello. Easy step-by-step instructions included.
This Rhubarb Upside-Down Cake relies on simple, everyday ingredients such as rhubarb, cut in chunks, sugar, cake mix (yellow or white) and (3 oz.) pkg. jello (red). It comes together quickly and makes 4 servings, at about 232 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 Rhubarb Upside-Down 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