There’s something about spring baking that makes you want to fling open your windows, blast your favorite playlist, and whip up something fresh and fabulous. Enter the Lemon Rhubarb Loaf—a tangy-sweet, moist treat that sings with citrus and a kiss of tart rhubarb. Whether you’ve got a bumper crop of rhubarb in your garden or just spotted some ruby stalks at the market, this loaf is your sunny-day baking solution.
I love how this lemon cake pulls double duty: it’s simple enough for a weekday pick-me-up yet elegant enough to serve at a brunch or baby shower. And let’s not overlook that citrus glaze—it’s the sparkle on top. Ready to brighten your baking game? Let’s dive in!
Why You’ll Love This Lemon Rhubarb Loaf
This isn’t just another rhubarb dessert. It’s the springtime hug your taste buds didn’t know they needed. The tartness of fresh rhubarb plays beautifully with the bright lemon juice and zest, while sour cream keeps everything tender and rich. Top it all off with a zingy citrus glaze, and you’ve got a loaf that’s pure sunshine.
Ingredients You’ll Need
For the Loaf:
- 1½ cups all-purpose flour
- 1 tsp baking powder
- ½ tsp baking soda
- ¼ tsp salt
- ½ cup unsalted butter, softened
- 1 cup granulated sugar
- 2 large eggs
- ¼ cup fresh lemon juice
- 1 tbsp lemon zest
- ½ cup sour cream or Greek yogurt
- 1 tsp vanilla extract
- 1 cup chopped fresh rhubarb
For the Glaze:
- ¾ cup powdered sugar
- 1–2 tbsp fresh lemon juice
How to Make It
- Preheat your oven to 350°F and grease or line a 9×5 inch loaf pan with parchment paper.
- In a medium bowl, whisk flour, baking powder, baking soda, and salt.
- In a large bowl, cream together butter and sugar until light and fluffy.
- Beat in eggs one at a time. Stir in lemon juice, zest, vanilla, and sour cream until smooth.
- Gradually fold in the dry ingredients until just combined.
- Toss rhubarb pieces in a bit of flour (helps them stay afloat!), then gently fold into the batter.
- Pour into prepared pan and bake for 50–60 minutes. A toothpick should come out clean when it’s done.
- Cool in the pan for 10 minutes before transferring to a wire rack.
- For the glaze, mix powdered sugar and lemon juice until pourable. Drizzle over the cooled loaf and let it set.
Spring Baking Tips for the Perfect Lemon Rhubarb Loaf
- Rhubarb too tart? Toss it with a teaspoon of sugar before folding it in.
- No sour cream? Greek yogurt is a fabulous sub and adds a slight tang.
- Keep your lemons at room temp—they’ll yield more juice (give them a roll on the counter too).
- Don’t skip the parchment paper—it makes loaf-lifting a breeze.
A Little Story from My Kitchen
This loaf first came to life on a rainy April afternoon when my neighbor dropped off a bundle of rhubarb from her garden. I had lemons on the counter and sour cream in the fridge. Magic happened. My kids wandered into the kitchen lured by the citrusy aroma, and before I could drizzle the glaze, they were already asking for a slice. Now it’s a seasonal staple.

What to Serve with Your Lemon Rhubarb Loaf
Pair this loaf with a cozy cup of chamomile tea or an iced matcha for a refreshing springtime snack. Hosting a brunch? Add some whipped cream or a scoop of vanilla bean ice cream to take it up a notch. It’s also fabulous alongside fresh berries or a dollop of lemon curd if you’re feeling fancy.
How to Store Your Lemon Rhubarb Loaf
Once cooled, wrap the loaf tightly in plastic wrap or place it in an airtight container. It stays moist and delightful for up to 3 days at room temp. Want it to last longer? Refrigerate for up to 5 days or freeze slices individually for grab-and-go treats. Just thaw overnight or pop in the toaster oven to refresh.
FAQs
Can I use frozen rhubarb? Absolutely! Just thaw and drain it well to avoid excess moisture.
Is this loaf very sweet? It’s perfectly balanced—sweet with a citrusy zing. You can reduce the sugar slightly if needed.
Can I make it gluten-free? Yes, just swap in your favorite 1:1 gluten-free flour blend.
What’s the best way to get a smooth glaze? Sift your powdered sugar first and stir in lemon juice gradually until you hit that drizzly sweet spot.
Brighten Your Day with This Lemon Rhubarb Loaf
This lemon rhubarb loaf is everything spring baking should be—easy, uplifting, and brimming with flavor. Whether you’re baking for your family, your friends, or just your own sanity (we’ve all been there), this lemon cake with its citrus glaze is sure to bring smiles. Go ahead, grab those rhubarb stalks and turn your afternoon into a slice of sunshine.
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Lemon Rhubarb Loaf with Glaze
- Total Time: 1 hour 10 minutes
- Yield: 10 slices 1x
Description
Brighten up your spring feed with this moist Lemon Rhubarb Loaf! A perfect citrus-kissed dessert with a zingy glaze, ideal for cozy tea times and eye-catching food posts.
Ingredients
For the Loaf:
- 1½ cups all-purpose flour
- 1 tsp baking powder
- ½ tsp baking soda
- ¼ tsp salt
- ½ cup unsalted butter, softened
- 1 cup granulated sugar
- 2 large eggs
- ¼ cup fresh lemon juice
- 1 tbsp lemon zest
- ½ cup sour cream or Greek yogurt
- 1 tsp vanilla extract
- 1 cup chopped fresh rhubarb
For the Glaze:
- ¾ cup powdered sugar
- 1–2 tbsp fresh lemon juice
Instructions
- Preheat your oven to 350°F and grease or line a 9×5 inch loaf pan with parchment paper.
- In a medium bowl, whisk flour, baking powder, baking soda, and salt.
- In a large bowl, cream together butter and sugar until light and fluffy.
- Beat in eggs one at a time. Stir in lemon juice, zest, vanilla, and sour cream until smooth.
- Gradually fold in the dry ingredients until just combined.
- Toss rhubarb pieces in a bit of flour (helps them stay afloat!), then gently fold into the batter.
- Pour into prepared pan and bake for 50–60 minutes. A toothpick should come out clean when it’s done.
- Cool in the pan for 10 minutes before transferring to a wire rack.
- For the glaze, mix powdered sugar and lemon juice until pourable. Drizzle over the cooled loaf and let it set.
Notes
Lightly flouring rhubarb prevents it from sinking in the batter.
Use Greek yogurt for a richer texture.
Let the glaze fully set before slicing for a cleaner presentation.
- Prep Time: 15 minutes
- Cook Time: 55 minutes
- Category: Desserts
- Cuisine: American