Rhubarb Cake is one of those recipes that instantly feels like home the moment it comes out of the oven. The first time I baked it, the kitchen was filled with the cozy aroma of tangy rhubarb mingling with sweet, buttery notes. The top turned a gorgeous golden brown, and the crumbly streusel gave each slice a delightful texture that made it impossible to resist.
What makes this cake so special is the perfect balance of flavors. The rhubarb brings a subtle tartness that pairs beautifully with the sweetness, while the sour cream gives the cake a moist, tender crumb that practically melts in your mouth. It’s simple, comforting, and deeply satisfying—a true homemade treat.
I couldn’t help sneaking a second slice while it was still warm, and it pairs wonderfully with a cup of tea or coffee. If you love desserts like Easy Strawberry Rhubarb Pie, this cake offers similar flavors but with a softer, more comforting texture that feels like a hug in dessert form.

Key Ingredients in Rhubarb Cake
Gathering the ingredients for this cake made me appreciate how a few simple items can create something extraordinary.
- 2 cups all-purpose flour
- 1 ¼ cups white sugar
- 1 teaspoon baking soda
- ½ teaspoon salt
- 2 large eggs, beaten
- 1 cup sour cream
- 3 cups diced rhubarb
Streusel:
- 1 cup white sugar
- ¼ cup butter, softened
- ¼ cup all-purpose flour
- ¼ teaspoon ground cinnamon, or to taste
How to Make Rhubarb Cake Step-by-Step
- Preheat the oven to 350°F (175°C) and grease and flour a 9×13-inch baking dish.
- In a large bowl, combine flour, sugar, baking soda, and salt.
- Stir in beaten eggs and sour cream until the batter is smooth and creamy.
- Gently fold in the diced rhubarb so it’s evenly distributed.
- Pour the batter into the prepared dish and spread it evenly.
- In a separate bowl, mix sugar and softened butter until smooth, then add flour to form a crumbly streusel.
- Sprinkle the streusel over the cake and dust lightly with cinnamon.
- Bake for 45 minutes, or until a toothpick inserted in the center comes out clean.
- Allow the cake to cool slightly before slicing and serving.
Conclusion
- This Rhubarb Cake is a cozy, delicious dessert that perfectly balances sweet and tart flavors.
- It’s simple to make, uses basic ingredients, and delivers bakery-quality results at home.
- Warm or at room temperature, it’s a cake you’ll want to bake again and again.