Desserts Cakes Cake Mix Cake Recipes Upside-Down Cake Upside-Down Rhubarb Cake 4.9 (17) 14 Reviews 7 Photos This delightful upside-down rhubarb cake recipe is easy to make with cake mix, fresh rhubarb, and strawberry gelatin. It's nice for picnics, looks pretty, and is the perfect summer dessert for feeding a crowd. Submitted by BOLTONLANE Updated on January 7, 2025 Save Rate Print Share Close Add Photo 7 7 7 7 Prep Time: 15 mins Cook Time: 35 mins Additional Time: 5 mins Total Time: 55 mins Servings: 20 Yield: 1 (9x13-inch) cake Jump to Nutrition Facts Cook Mode (Keep screen awake) Ingredients 1x 2x 4x Oops! Something went wrong. Our team is working on it. Original recipe (1X) yields 20 servings 4 cups chopped rhubarb 1 cup white sugar 1 (3 ounce) package strawberry-flavored gelatin (such as Jell-O) 3 tablespoons quick-cooking tapioca 1 (15.25 ounce) package white cake mix (such as Duncan Hines) 1 cup water 3 large eggs ⅓ cup vegetable oil Directions Preheat the oven to 350 degrees F (175 degrees C). Grease a 9x13-inch baking pan. Combine rhubarb, sugar, gelatin mix, and tapioca in a bowl; spread into bottom of the prepared baking pan. Combine cake mix, water, eggs, and vegetable oil in a large bowl; beat with an electric mixer on low speed until moistened. Increase speed to medium and beat for 2 minutes. Pour batter over rhubarb mixture. Bake in the preheated oven until a toothpick inserted into the center comes out clean, about 35 minutes. Cool cake in the pan for 5 to 10 minutes before inverting onto a platter. Editor's Note: The directions for making the cake are based on the particular brand mentioned. Follow instructions on the box if using a different brand. I Made It Print 39 home cooks made it! Nutrition Facts (per serving) 210 Calories 7g Fat 36g Carbs 3g Protein Show Full Nutrition Label Hide Full Nutrition Label Nutrition Facts Servings Per Recipe 20 Calories 210 % Daily Value * Total Fat 7g 8% Saturated Fat 1g 5% Cholesterol 10mg 3% Sodium 135mg 6% Total Carbohydrate 36g 13% Dietary Fiber 1g 2% Total Sugars 29g Protein 3g 5% Vitamin C 2mg 2% Calcium 52mg 4% Iron 0mg 3% Potassium 96mg 2% * Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs. ** Nutrient information is not available for all ingredients. Amount is based on available nutrient data. (-) Information is not currently available for this nutrient. If you are following a medically restrictive diet, please consult your doctor or registered dietitian before preparing this recipe for personal consumption.