Name: Rhubarb Sour Cream Cake
Prep time: 10 min
Cook time: 40 min
Total time: 50 min
Cuisine: American
Ingredients: 1 1/2 cups sugar; 1/2 cup butter, melted; 1 egg; 1 cup sour cream; 1 teaspoon vanilla; 1 teaspoon baking soda; 2 cups flour; 1 1/2 cups chopped rhubarb; 1/3 cup sugar (topping); 1 teaspoon cinnamon

Jump to Recipe

Rhubarb Sour Cream Cake is the kind of dessert you don’t plan—you just make it, slice it, and suddenly realize half the pan is gone. This easy rhubarb cake brings together tart rhubarb and a rich, creamy batter for a perfectly balanced treat. Whether you bake it late at night or early in the morning, this tangy sweet cake delivers comforting flavor in every bite.

Story

I didn’t plan to bake a Rhubarb Sour Cream Cake that night, but once I spotted fresh rhubarb, everything changed. Within minutes, I had the batter ready, and soon the kitchen filled with that warm, buttery aroma. This Rhubarb Sour Cream Cake came together so quickly that it felt almost effortless. Even better, the texture turned out incredibly soft, making it a moist sour cream bake you’ll keep thinking about. Every bite offers a balance of tart and sweet, and honestly, this Rhubarb Sour Cream Cake might become your go-to seasonal favorite.

Ingredients

1 1/2 cups granulated sugar
1/2 cup (1 stick) butter, melted
1 large egg
1 cup sour cream
1 teaspoon vanilla extract
1 teaspoon baking soda
2 cups all-purpose flour
1 1/2 cups chopped rhubarb (fresh or frozen)

Topping:

1/3 cup granulated sugar
1 teaspoon ground cinnamon

Step-by-Step Instructions

Preparing the Ingredients

Start by preheating your oven to 350°F, then grease a 7×11-inch or 9×13-inch baking pan. Next, chop the rhubarb into small, even pieces so it distributes well throughout the cake. Measure all ingredients carefully, and allow the melted butter to cool slightly before mixing. This step keeps the batter smooth and prevents the egg from cooking too early.

Cooking Instructions

In a large mixing bowl, combine sugar, melted butter, vanilla, sour cream, and egg, then beat until smooth. After that, stir in the flour and baking soda until just combined, avoiding overmixing. Fold in the chopped rhubarb evenly, then spread the batter into your prepared pan. In a small bowl, mix the cinnamon and sugar, and sprinkle it evenly over the top. Bake for 35–40 minutes, or slightly less if using a larger pan, until a toothpick inserted in the center comes out clean.

Tips for Perfect Results

Common Mistakes to Avoid

Avoid overmixing the batter, as this can make the cake dense instead of tender. Also, don’t skip greasing the pan thoroughly, since the sugary topping can stick. If you use frozen rhubarb, make sure to thaw and drain it first to prevent excess moisture from affecting the texture.

Pro Tips for Better Flavor

Use fresh rhubarb when possible for the brightest flavor, although frozen works well in a pinch. For extra depth, try adding a pinch of salt to the batter to balance the sweetness. Let the cake cool slightly before slicing so the texture sets properly and the flavors come together.

Serving and Storage

How to Serve

Serve this Rhubarb Sour Cream Cake slightly warm for the best experience, as the crumb stays soft and tender. It pairs beautifully with coffee in the morning or as a simple dessert after dinner. You can also add a dollop of whipped cream or a scoop of vanilla ice cream for a richer treat.

How to Store Leftovers

Store leftovers in an airtight container at room temperature for up to two days, or refrigerate for up to five days. When reheating, warm individual slices briefly in the microwave to bring back that fresh-from-the-oven texture. You can also freeze portions for longer storage and thaw as needed.

Conclusion

This Rhubarb Sour Cream Cake proves that simple ingredients can create something truly memorable. With its quick preparation and rich flavor, it’s a recipe you’ll want to make again and again. Once you try it, you’ll understand why this cake disappears so quickly.

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Frequently Asked Questions

Can I use frozen rhubarb instead of fresh?

Yes, frozen rhubarb works well in this recipe, but make sure to thaw and drain it thoroughly before adding it to the batter to avoid excess moisture.

Why is sour cream important in this cake?

Sour cream adds moisture and richness, giving the cake its soft texture and slightly tangy flavor that balances the sweetness.

Can I make this cake in a different pan size?

Yes, you can use a 9×13-inch pan for a thinner cake or a smaller pan like 7×11 for a thicker texture, adjusting the baking time as needed.