A piece of Old Fashioned Rhubarb Cake
Old Fashioned Rhubarb Cake
Prep Time
15 mins
Cook Time
35 mins
Total Time
50 mins

This Old Fashioned Rhubarb Cake is a delicious treat, and the recipe comes straight from my grandmother's cookbook!

Course: Dessert
Cuisine: American
Keyword: old fashioned rhubarb cake, rhubarb, rhubarb cake, rhubarb cake recipe
Servings: 12 slices
Calories: 289 kcal
Author: Ginnie
  • nonstick cooking spray
For Topping:
  • 1/3 cup sugar
  • 1 teaspoon cinnamon
  • 1/3 cup chopped nuts (I prefer pecans or walnuts.)
For Cake:
  • 1/2 cup unsalted butter
  • 1 1/2 cups sugar
  • 1 large egg
  • 1 teaspoon baking soda
  • 1 cup buttermilk
  • 1/2 teaspoon salt
  • 2 cups + 1 tablespoon flour
  • 3 cups chopped rhubarb
For Serving:
  • whipped cream, optional
  1. Preheat oven to 350 degrees. Spray a 9 x 13-inch cake pan with cooking spray and set aside.
Prepare topping:
  1. Combine sugar, cinnamon, and nuts in a small bowl. Set aside.
Prepare cake:
  1. Cream butter and sugar together using a mixer.
  2. Add the egg and blend well.
  3. Combine baking soda and buttermilk.
  4. Add milk to butter mixture, along with salt. Mix well.
  5. Add flour to milk/butter mixture in two batches, mixing until well blended. (It won't be perfectly smooth.)
  6. Fold rhubarb into batter with a spatula.
  7. Spread batter in prepared pan.
  8. Sprinkle topping evenly over cake.
  9. Bake cake 35 to 45 minutes, or until a knife inserted in the middle comes out clean.
  10. Let cake cool completely before eating.
  11. Serve cake topped with whipped cream, if desired. Enjoy!


If you are like me, you probably don't use a lot of buttermilk. Here's an easy substitute: combine 1 tablespoon lemon juice or white vinegar with enough milk to make 1 cup. Let sit for 5 minutes before using in recipe.