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A slice of rhubarb cake with butter sauce on a plate

Rhubarb Cake with Butter Sauce

A vintage-style cake featuring fresh rhubarb and a decadent butter sauce, balancing sweet and tart flavors in a comforting dessert.
Prep Time 20 minutes
Cook Time 50 minutes
Total Time 1 hour 10 minutes
Course Dessert
Cuisine American
Servings 12 slices
Calories 420 kcal

Equipment

  • Mixing bowls
  • Hand or stand mixer
  • 9×13 inch baking pan
  • Oven
  • Saucepan
  • Whisk

Ingredients
  

For the Cake

  • 2 cups fresh rhubarb chopped into ½-inch pieces
  • 1 cup butter softened
  • 1 1/2 cups granulated sugar
  • 2 eggs room temperature
  • 1 tsp vanilla extract
  • 2 1/2 cups all-purpose flour
  • 1 tsp baking soda
  • 1/2 tsp salt
  • 1 cup buttermilk

For the Butter Sauce

  • 1/2 cup butter
  • 1 cup granulated sugar
  • 1/2 cup heavy cream
  • 1 tsp vanilla extract

Instructions
 

  • Preheat oven to 350°F (175°C). Grease a 9×13 inch baking pan.
  • In a large bowl, cream together butter and sugar until light and fluffy.
  • Add eggs one at a time, mixing well after each addition.
  • Stir in vanilla extract.
  • In a separate bowl, whisk together flour, baking soda, and salt.
  • Gradually add dry ingredients to the wet mixture, alternating with buttermilk.
  • Gently fold in the chopped rhubarb.
  • Pour batter into the prepared baking pan and spread evenly.
  • Bake for 45-50 minutes, or until a toothpick inserted in the center comes out clean.
  • Let the cake cool in the pan for 10 minutes before serving.
  • For the butter sauce, combine butter, sugar, and cream in a saucepan over medium heat.
  • Whisk until smooth and slightly thickened, about 3-5 minutes.
  • Remove from heat and stir in vanilla extract.
  • Drizzle warm butter sauce over individual slices before serving.

Notes

For a twist, try adding a pinch of cinnamon to the cake batter or serving with a scoop of vanilla ice cream.
Keyword Homemade butter sauce, Rhubarb cake, Vintage dessert