
This Rhubarb Cake is a nostalgic dessert with a perfectly balanced tartness from the rhubarb and sweet cinnamon-sugar topping. Originating from traditional Midwestern kitchens, rhubarb desserts are loved for their seasonal freshness and tangy bite. This handwritten gem labeled “Elayne” hints at a personal favorite that likely delighted many family gatherings. It’s a moist, spiced sheet cake that celebrates the vibrant red rhubarb harvest of spring and early summer, and it pairs beautifully with a scoop of vanilla ice cream or whipped cream.
Ingredients
- 1 ½ cups brown sugar
- ½ cup butter (or margarine)
- 1 egg
- 1 cup buttermilk
- 1 tsp baking soda
- ½ tsp salt
- 2 cups flour
- 2 cups diced rhubarb
- Topping:
- ½ cup sugar
- 1 tsp cinnamon
Instructions
Step 1: Cream Butter & Sugar
- Cream together the brown sugar and butter until smooth.
Step 2: Mix in Wet Ingredients
- Add egg and beat until well combined. Stir in buttermilk.
Step 3: Combine Dry Ingredients
- In a separate bowl, mix flour, baking soda, and salt.
Step 4: Combine Wet & Dry
- Gradually mix dry ingredients into the wet mixture until just combined.
Step 5: Add Rhubarb
- Fold in the diced rhubarb gently.
Step 6: Pour & Top
- Spread the batter evenly in a greased 9×12-inch pan.
- Sprinkle with sugar and cinnamon mixture.
Step 7: Bake
- Bake at 350°F for 1 hour or until a toothpick comes out clean.
Tips
- Use fresh or frozen rhubarb; if frozen, thaw and drain excess liquid.
- Add ½ to 1 cup chopped nuts for texture (walnuts or pecans).
- Stir in 1 teaspoon vanilla extract for a deeper flavor.
- Replace half the rhubarb with strawberries for a sweeter variation.
- Add orange zest to the batter for a citrus twist.
- Swap buttermilk with sour milk (milk + 1 tbsp vinegar) if needed.
- Serve warm with vanilla ice cream or whipped cream.
- Add a crumb topping instead of the cinnamon-sugar sprinkling.
- Make it into muffins, bake 18 to 22 minutes at 350°F.
- Line the pan with parchment for easier removal.
Nutrition
Calories: 305kcalCarbohydrates: 53gProtein: 3gFat: 10gSaturated Fat: 1.4gPolyunsaturated Fat: 3.8gMonounsaturated Fat: 4.2gCholesterol: 17mgSodium: 215mgPotassium: 170mgFiber: 1.1gSugar: 35gVitamin A: 80IUVitamin C: 4mgCalcium: 52mgIron: 1.2mg
Tried this recipe?Let us know how it was!

