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Moist rhubarb cake square.
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Moist Rhubarb Cake

Experience the magic of rhubarb in this moist cake with streusel that is sure to become a family favorite.
Prep Time25 minutes
Cook Time55 minutes
Total Time1 hour 20 minutes
Course: Dessert
Cuisine: European, Polish
Diet: Vegetarian
Servings: 12
Calories: 256kcal
Author: Ilona

Ingredients

Cake

  • 1 cup all-purpose flour
  • 1 tsp. baking powder
  • 1/2 cup unsalted butter soften
  • 1/2 cup granulated sugar
  • 2 eggs room temperature
  • 1 tsp. vanilla extract
  • 1/3 cup buttermilk
  • 1 1/2 cup rhubarb cut into small pieces

Streusel

  • 3/4 cup all-purpose flour
  • 1/3 cup unsalted butter melted
  • 1/4 cup granulated sugar
  • 2 Tbsp. powdered sugar

Instructions

Cake

  • Preheat oven to 350 F. Prepare 8 x 8 baking pan with parchment paper.
  • In a large bowl combine flour with baking powder, set aside.
    1 cup all-purpose flour, 1 tsp. baking powder
  • In a large bowl mix with electric mixer butter with granulated sugar until fluffy.
    1/2 cup unsalted butter, 1/2 cup granulated sugar
  • Add eggs, one at a time. Mix with electric mixer.
    2 eggs
  • Add vanilla extract, mix in.
    1 tsp. vanilla extract
  • Add buttermilk, mix with a spoon or spatula.
    1/3 cup buttermilk
  • Add dry ingredients to wet ingredients, mix with a spoon or spatula.
  • Pour into the baking pan on top of parchment paper.
  • Add rhubarb on top, spread nicely.
    1 1/2 cup rhubarb

Streusel

  • In a large bowl combine flour, butter and granulated sugar, mix with a spoon.
    3/4 cup all-purpose flour, 1/3 cup unsalted butter, 1/4 cup granulated sugar
  • Add on top of rhubarb, spread it.
  • Bake for 45 - 55 minutes at 350 F.
  • Cool off, sprinkle powdered sugar.
    2 Tbsp. powdered sugar

Notes

  • You need to use electric mixer for wet ingredients only. Once you will add flour and baking powder, use the spoon to combine ingredients together nicely.
  • Cut rhubarb into small pieces and spread it evenly on the layer of the cake.
  • Once the dessert is cooled off, sprinkle some powder sugar on top to add extra sweetness (optional).
  • Store the cake outside on countertop for up to 1-2 days or in refrigerator longer, approximately 5-7 days. The cake freezes well too, consider freezing if you will not eat in few days.

Nutrition

Calories: 256kcal | Carbohydrates: 30g | Protein: 3g | Fat: 14g | Saturated Fat: 8g | Polyunsaturated Fat: 1g | Monounsaturated Fat: 4g | Trans Fat: 1g | Cholesterol: 62mg | Sodium: 21mg | Potassium: 129mg | Fiber: 1g | Sugar: 16g | Vitamin A: 460IU | Vitamin C: 1mg | Calcium: 49mg | Iron: 1mg