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Rhubarb Cake with Butter Sauce

  • Author: Naomi
  • Total Time: 55 minutes
  • Yield: 15 servings


Rhubarb Cake with Butter Sauce is a delightful treat that combines the tartness of rhubarb with the sweet, creamy richness of butter sauce. This recipe offers a twist on traditional desserts, incorporating the vibrant flavors of rhubarb into a simple yet elegant cake that’s perfect for any occasion.


4 cups all-purpose flour
2 cups granulated sugar
4 teaspoons baking powder
1/2 teaspoon salt
4 cups diced rhubarb (fresh or frozen and thawed)
2 cups milk
6 tablespoons melted butter
Butter Sauce:
1/2 cup (1 stick) butter
1 cup sugar
3/4 cup heavy cream


Preheat the oven to 350°F (175°C). Grease a 9×13 inch baking pan.
In a large bowl, whisk together flour, sugar, baking powder, and salt. Add diced rhubarb, milk, and melted butter. Stir just until combined.
Pour the batter into the prepared pan. Bake for 45 minutes or until a toothpick inserted into the center comes out clean.
To make the butter sauce: In a saucepan, combine butter, sugar, and heavy cream. Bring to a boil over medium heat, boil for 1 minute while stirring frequently. Let cool slightly.
Serve the cake warm with a generous drizzle of the warm butter sauce.


  • Ingredient Quality: For the best results, use fresh rhubarb when in season. The freshness of the rhubarb significantly enhances the flavor profile of the cake.
  • Baking Pan: A 9×13 inch baking pan is recommended for even cooking. Ensure the pan is well-greased to prevent sticking, or line it with parchment paper for easier cleanup.
  • Oven Calibration: Ovens can vary, so it’s a good idea to use an oven thermometer to ensure accurate temperature settings. This will help prevent overbaking or underbaking.
  • Sauce Consistency: The butter sauce should be smooth and thick enough to coat the back of a spoon. If the sauce is too thin, continue boiling for an additional minute. If too thick, thin it out with a little more cream.
  • Serving Suggestion: For an extra touch of sophistication, garnish the cake with a sprinkle of edible flowers or finely zested citrus peel before serving. This not only adds color but also a hint of fresh aroma.
  • Storage: Store leftover cake covered in the refrigerator. Reheat slices gently in the microwave, and warm the sauce separately to maintain the best texture and flavor.
  • Dietary Modifications: Refer to the variations section for substitutions that cater to vegan, gluten-free, and sugar-conscious diets. Adapting the recipe to these needs allows more guests to enjoy this delightful dessert without compromise.
  • Prep Time: 10 minutes
  • Cook Time: 45 minutes
  • Category: Cake
  • Cuisine: American


  • Calories: 363 kcal per serving