Sour Cream Rhubarb Coffee Cake

Introduction

If you’re looking for a delightful treat that balances tart and sweet with a moist, tender crumb, this Sour Cream Rhubarb Coffee Cake is sure to become your new favorite. The rhubarb provides a bright, tangy flavor that pairs beautifully with the richness of sour cream, creating a wonderfully soft and moist cake. Topped with a crunchy, cinnamon-spiced oat crumb, every bite delivers a pleasing texture contrast and an inviting aroma that fills the kitchen with warmth. Whether you’re serving it for breakfast, brunch, or afternoon coffee, this cake’s charm lies in its perfect harmony of flavors and textures, making it irresistible to rhubarb lovers and coffee cake aficionados alike.

Prep Time, Cook Time, and Servings

This Sour Cream Rhubarb Coffee Cake takes about 15 minutes to prep and 45 to 50 minutes to bake, resulting in a total time of approximately 1 hour. The recipe yields 9 generous servings, perfect for sharing with family or friends.

Ingredients

• 2 cups all-purpose flour
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1/4 teaspoon salt
• 1/2 cup unsalted butter, softened
• 1 cup granulated sugar
• 2 large eggs
• 1 teaspoon vanilla extract
• 1 cup sour cream
• 2 cups fresh rhubarb, chopped
• 1/2 cup all-purpose flour (for topping)
• 1/2 cup old-fashioned rolled oats
• 1/3 cup packed brown sugar
• 1/2 teaspoon ground cinnamon
• 1/4 cup unsalted butter, cold and cubed

Step-by-Step Instructions

1. Preheat your oven: Set your oven to 350°F (175°C). Grease and flour a 9×9-inch baking dish, or line it with parchment paper for easy removal.
2. Mix dry ingredients for the batter: In a medium bowl, whisk together 2 cups all-purpose flour, baking powder, baking soda, and salt until combined.
3. Cream butter and sugar: In a large mixing bowl, beat the softened butter and granulated sugar together until light and fluffy—about 3-4 minutes with an electric mixer on medium speed.
4. Add eggs and vanilla: Beat in the eggs one at a time, making sure each is fully incorporated before adding the next. Stir in the vanilla extract.
5. Combine wet and dry ingredients: Alternately add the flour mixture and sour cream to the butter mixture, starting and ending with the dry ingredients. Mix gently until just combined to avoid overmixing.
6. Fold in the rhubarb: Using a rubber spatula, carefully fold the chopped rhubarb into the batter, distributing it evenly without smashing the pieces.
7. Prepare the crumb topping: In a small bowl, combine 1/2 cup flour, rolled oats, brown sugar, and cinnamon. Cut in the cold cubed butter using a pastry cutter or your fingers until the mixture resembles coarse crumbs.
8. Assemble the cake: Pour the batter into your prepared baking dish and spread it evenly. Sprinkle the crumb topping evenly over the surface.
9. Bake: Place the cake in the oven and bake for 45-50 minutes, or until a toothpick inserted into the center comes out clean and the topping is golden brown.
10. Cool and serve: Allow the cake to cool slightly in the pan before slicing. This cake is delightful served warm or at room temperature.

Pro Tips for Perfect Sour Cream Rhubarb Coffee Cake

• Use fresh rhubarb: Fresh rhubarb provides the best flavor and texture. If you only have frozen, thaw and drain excess liquid before adding.
• Don’t overmix the batter: Mixing just until combined keeps the cake tender and avoids a dense texture.
• Keep butter cold for topping: Cold butter creates a crumbly, crisp topping—avoid softening it for the best texture.
• Line your pan: Using parchment paper helps remove the cake cleanly without breaking.
• Check the cake early: Oven temperatures vary, so start checking for doneness at 40 minutes to avoid overbaking.

Variations and Substitutions

For a twist on this classic recipe, consider trying some of these variations or substitutions:

• Fruit substitutions: Swap rhubarb with fresh strawberries, raspberries, or a mix for a sweeter profile.
• Healthier swaps: Use whole wheat flour instead of all-purpose for added fiber, or substitute half the sugar with coconut sugar or maple syrup (adjust liquid accordingly).
• Dairy alternatives: Use lactose-free sour cream or plain Greek yogurt if you want a tangy but slightly healthier option.
• Gluten-free option: Substitute the flour with your favorite gluten-free baking blend to accommodate dietary restrictions.
• Nut topping variation: Add chopped walnuts or pecans to the crumb topping for extra crunch.

Storage and Reheating Tips

To keep your Sour Cream Rhubarb Coffee Cake fresh, store it in an airtight container at room temperature for up to 2 days. For longer storage, refrigerate the cake for up to 5 days. To freeze, wrap tightly in plastic wrap and foil, freezing for up to 3 months. Thaw overnight in the refrigerator.

When reheating, warm individual slices in the microwave for about 20 seconds or in a preheated 325°F (160°C) oven for 10-15 minutes to enjoy the cake nearly as fresh. Adding a pat of butter or a dollop of whipped cream can enhance the experience.

FAQ

Can I use frozen rhubarb for this recipe?

Yes, but make sure to thaw and drain it well to remove excess moisture to prevent the batter from becoming soggy.

Is sour cream necessary or can I substitute it?

Sour cream adds moisture and tang, making the cake tender. You can substitute with Greek yogurt or buttermilk, but expect slight differences in texture and flavor.

How do I know when the coffee cake is done?

Insert a toothpick near the center; if it comes out clean with just a few crumbs, the cake is ready. The crumb topping should be golden and crisp.

Can this recipe be doubled?

Yes, you can double the ingredients and bake in a 9×13-inch pan. Baking time may increase by about 10-15 minutes; monitor closely.

What’s the best way to serve this coffee cake?

Serve warm or at room temperature. It pairs wonderfully with a cup of coffee or tea, and a bit of butter or cream cheese spread adds extra richness.

Nutrition Estimate Per Serving

Each serving of this Sour Cream Rhubarb Coffee Cake contains approximately 320 calories, with 5 grams of protein, 45 grams of carbohydrates, and 13 grams of fat. The balance of macronutrients comes from wholesome ingredients, making it a pleasantly indulgent treat without being overly heavy.

Print Recipe

Sour Cream Rhubarb Coffee Cake

A moist and tender coffee cake with tangy rhubarb chunks, enhanced by the richness of sour cream and topped with a crunchy cinnamon-oat crumb. Perfect for breakfast or coffee pairings, this cake offers a delightful balance of textures and flavors.

Prep Time15 minutes mins

Cook Time45 minutes mins

Total Time1 hour hr

Course: Breakfast & Brunch

Cuisine: American

Servings: 9 servings

Calories: 250kcal

Author: Samantha Jones

Ingredients

• 2 cups all-purpose flour
• 1 1/2 teaspoons baking powder
• 1/2 teaspoon baking soda
• 1/4 teaspoon salt
• 1/2 cup unsalted butter, softened
• 1 cup granulated sugar
• 2 large eggs
• 1 teaspoon vanilla extract
• 1 cup sour cream
• 2 cups fresh rhubarb, chopped
• 1/2 cup all-purpose flour (for topping)
• 1/2 cup old-fashioned rolled oats
• 1/3 cup packed brown sugar
• 1/2 teaspoon ground cinnamon
• 1/4 cup unsalted butter, cold and cubed

Instructions

• Preheat your oven: Set your oven to 350°F (175°C). Grease and flour a 9x9-inch baking dish, or line it with parchment paper for easy removal.
• Mix dry ingredients for the batter: In a medium bowl, whisk together 2 cups all-purpose flour, baking powder, baking soda, and salt until combined.
• Cream butter and sugar: In a large mixing bowl, beat the softened butter and granulated sugar together until light and fluffy—about 3-4 minutes with an electric mixer on medium speed.
• Add eggs and vanilla: Beat in the eggs one at a time, making sure each is fully incorporated before adding the next. Stir in the vanilla extract.
• Combine wet and dry ingredients: Alternately add the flour mixture and sour cream to the butter mixture, starting and ending with the dry ingredients. Mix gently until just combined to avoid overmixing.
• Fold in the rhubarb: Using a rubber spatula, carefully fold the chopped rhubarb into the batter, distributing it evenly without smashing the pieces.
• Prepare the crumb topping: In a small bowl, combine 1/2 cup flour, rolled oats, brown sugar, and cinnamon. Add the cold, cubed butter and mix until the mixture resembles coarse crumbs. Press the crumb mixture evenly over the top of the batter.
• Bake the cake: Transfer to the preheated oven and bake for 45 to 50 minutes, or until a toothpick inserted into the center comes out clean and the top is golden brown.
• Let cool: Allow the cake to cool slightly before slicing and serving.

Notes

Use the freshest rhubarb available for vibrant tartness. Chill the batter for 30 minutes before baking for added moisture. Store in an airtight container at room temperature for up to 3 days or refrigerate for longer freshness.