Every time I think of rhubarb, I’m transported back to my grandmother’s farmhouse kitchen. She had a patch of rhubarb growing by the back porch, and come spring or winter, it always made its way into something cozy and delightful. Among her most cherished creations was this Rhubarb Cake with Butter Sauce. The tartness of rhubarb paired with the indulgence of a rich butter sauce makes this cake the perfect comfort dessert—ideal for chilly winter evenings or summer picnics alike.
Whether you’re new to baking or a seasoned pro, this recipe is simple, satisfying, and guaranteed to become a household favorite. Let’s dive in!
Why You’ll Love This Rhubarb Cake
- Perfectly balanced: The tart rhubarb contrasts beautifully with the sweet, buttery sauce.
- Year-round delight: Rhubarb freezes wonderfully, so you can enjoy this dish in both summer and winter.
- Easy to make: No complicated steps, just classic American baking at its best.
- Nostalgic flavors: A recipe rooted in tradition with flavors that warm the soul.
Ingredients
For the Rhubarb Cake:
- 1 ½ cups (300 g) granulated sugar
- ½ cup (115 g) unsalted butter, softened
- 1 large egg
- 1 cup (240 ml) buttermilk
- 1 tsp vanilla extract
- 2 cups (250 g) all-purpose flour
- ½ tsp baking soda
- ½ tsp salt
- 1 ½ cups chopped rhubarb (fresh or frozen)
For the Butter Sauce:
- ½ cup (115 g) unsalted butter
- 1 cup (200 g) granulated sugar
- ¾ cup (180 ml) heavy cream or half-and-half
- 1 tsp vanilla extract
Instructions
1. Preheat and Prepare
Preheat your oven to 350°F (175°C). Grease a 9×9 inch baking dish or line it with parchment paper.
2. Mix the Wet Ingredients
In a large bowl, cream the butter and sugar together until light and fluffy. Beat in the egg and vanilla, then gradually add the buttermilk, mixing well.
3. Combine the Dry Ingredients
In a separate bowl, whisk together the flour, baking soda, and salt. Gradually stir the dry ingredients into the wet mixture until just combined.
4. Fold in the Rhubarb
Gently fold the chopped rhubarb into the batter. It may look thick—that’s perfectly normal.
5. Bake the Cake
Pour the batter into the prepared dish. Smooth the top with a spatula. Bake for 40–45 minutes, or until a toothpick inserted in the center comes out clean.
6. Make the Butter Sauce
While the cake bakes, prepare the sauce. In a saucepan over medium heat, melt the butter. Add sugar and cream, stirring constantly until the mixture comes to a low boil. Reduce heat and simmer for 5 minutes. Remove from heat and stir in vanilla.
7. Serve
Let the cake cool slightly before serving. Cut into squares and drizzle generously with the warm butter sauce. For a decadent touch, add a scoop of vanilla ice cream or a dollop of whipped cream.
Tips for Success
- Use fresh rhubarb when in season, but frozen works great too—just thaw and drain before using.
- Don’t overmix your batter once you add the flour; this keeps the cake tender.
- Add a sprinkle of cinnamon or nutmeg to the batter for a warm, spiced twist.
- This cake stores well for up to 3 days at room temperature, and the butter sauce can be refrigerated and gently reheated.
Seasonal Versatility
What makes this Rhubarb Cake with Butter Sauce so wonderful is its adaptability. In summer, the bright tartness of fresh rhubarb is refreshing. In winter, it becomes a cozy, nostalgic treat. Pair with a hot drink and you’ve got the ultimate comfort food.
A Nod to American Roots
Rhubarb has long been a staple in traditional American baking, especially in the Midwest. From pies to compotes, it’s prized for its unique tang. This recipe harks back to family gatherings and potlucks, where simple ingredients came together to create something truly special.
Suggested Pairings
- Serve with Vanilla Bean Ice Cream for a classic finish.
- Add a Hot Toddy or Chai Latte for winter coziness.
- Pair with a Lemonade or Iced Tea in summer months.
FAQs
Can I use other fruits?
Yes, strawberries pair beautifully with rhubarb if you want a fruitier twist.
Is this cake freezer-friendly?
Absolutely. Freeze slices without the sauce, then thaw and add freshly warmed butter sauce when serving.
Can I make this gluten-free?
Yes, substitute a 1:1 gluten-free flour blend. Check the baking time as it may vary slightly.
Final Thoughts
If you’re searching for a dessert that’s both humble and heavenly, this Rhubarb Cake with Butter Sauce is it. It’s a slice of nostalgia, a hug in cake form, and a celebration of simple, seasonal ingredients.
Have you tried this recipe? Let us know in the comments! Share your tweaks and serve it up with your favorite seasonal pairing. 🍰