Lemon Rhubarb Loaf Cake — the scent of bright lemon and tart rhubarb baking in the oven always takes me back to cozy autumn mornings when the windows are fogged, mugs steam on the counter, and a warm loaf waits to be sliced. This Lemon Rhubarb Loaf Cake has become a reader favorite because it captures that seasonal comfort: tart fruit folded into a tender crumb, finished with a glossy lemon glaze that’s both sunny and soothing. If you enjoy easy seasonal desserts, this loaf will feel like a warm hug. For another impressive simple dessert to try, pair weekend baking with an air fryer cheesecake for a brunch spread.
Why you’ll love this Lemon Rhubarb Loaf Cake
- Bright lemon zest balances the rhubarb’s tartness.
- Simple, pantry-friendly ingredients make it approachable for bakers of any level.
- The loaf stores well and makes a beautiful gift or breakfast treat.
Ingredients
- 1 1/2 cups all-purpose flour
- 1 tsp baking powder
- 1/2 tsp baking soda
- 1/4 tsp fine salt
- 1/2 cup unsalted butter, softened
- 3/4 cup granulated sugar
- 2 large eggs, at room temperature
- 1 tsp vanilla extract
- 1/4 cup plain yogurt or buttermilk
- 1/4 cup milk
- Zest of 2 lemons
- 1/3 cup fresh lemon juice (about 2 lemons)
- 1 1/2 cups rhubarb, chopped into 1/2-inch pieces
- 1 tbsp cornstarch (tossed with rhubarb)
- For the glaze: 1 cup powdered sugar and 2–3 tbsp lemon juice
Step-by-step instructions
- Preheat and prep: Preheat the oven to 350°F (175°C). Grease a 9×5-inch loaf pan and line with parchment for easy removal.
- Toss the rhubarb: In a small bowl, toss chopped rhubarb with the cornstarch so the pieces won’t sink and will release less liquid.
- Dry ingredients: Whisk together flour, baking powder, baking soda, and salt in a medium bowl.
- Cream butter and sugar: In a large bowl, beat the butter and sugar until pale and fluffy (about 2–3 minutes). Add eggs one at a time, mixing well after each. Stir in vanilla and lemon zest.
- Alternate wet and dry: Mix in half the dry ingredients, then the yogurt and milk, then the remaining dry ingredients. Stir just until combined.
- Fold in rhubarb: Gently fold the rhubarb into the batter so it’s evenly distributed.
- Bake: Pour batter into prepared loaf pan. Bake 50–60 minutes, or until a toothpick comes out with a few moist crumbs. If the top browns too quickly, tent with foil for the last 10–15 minutes.
- Lemon soak and glaze: While the loaf cools in the pan for 10 minutes, mix lemon juice with 2 tbsp sugar and prick the top of the warm loaf with a skewer. Spoon the lemon soak over the loaf so it absorbs into the crumb. Transfer to a wire rack to cool. When cool, whisk powdered sugar and remaining lemon juice until pourable and drizzle over the loaf.
Tips for success
- Use fresh, firm rhubarb. Soft or overripe stalks can make the loaf watery.
- Room-temperature eggs and butter help the batter emulsify for a tender crumb.
- Don’t overmix after adding flour — overworking develops gluten and makes the loaf dense.
- If your rhubarb pieces are large, cut them smaller so they distribute evenly and don’t create tunnels in the bread.
- For a slightly lighter texture, you can swap half the butter for neutral oil.
- If you want to explore other seasonal treats while you wait for the loaf to cool, try baking a mini dark chocolate cake or make savory mains like this skinny meatloaf for dinner and a sweet loaf for dessert.
Possible variations
- Gluten-free: Substitute a 1:1 gluten-free flour blend and add 1/4 tsp xanthan gum if your blend lacks it.
- Streusel topping: Mix 1/3 cup brown sugar, 1/4 cup flour, 3 tbsp cold butter, and 1/2 tsp cinnamon; sprinkle on top before baking.
- Citrus swap: Use lime or orange zest for a different citrus profile.
- Yogurt-laced: Replace milk with Greek yogurt (thin with a tablespoon of milk if needed) for extra moisture.
- If you’d like to balance sweet and savory on your menu, serve slices with brunch mains like air-fryer meatloaf with creamy mashed potatoes or a lighter fish option like Asian tuna cakes.
Storage recommendations
- At room temperature: Wrap the cooled loaf tightly in plastic wrap or place in an airtight container for up to 2 days.
- In the fridge: Store for up to 5 days; bring to room temperature before serving for best flavor.
- Freezing: Wrap slices or the whole loaf tightly in plastic and foil, then freeze up to 3 months. Thaw overnight in the refrigerator or at room temperature for a few hours.
Serving ideas
- Serve slightly warm with a smear of butter or a dollop of whipped cream.
- Pair with hot tea or coffee for a cozy afternoon treat.
- Slice thinly for brunch platters or thicker for dessert with a scoop of vanilla ice cream.
Conclusion
This Lemon Rhubarb Loaf Cake is a simple, seasonal crowd-pleaser that’s forgiving for beginners yet special enough for holiday tables. If you love exploring citrus-baked goods, you might also enjoy this take on a lemon-rhubarb coffee-style treat from a well-loved food blog: Lemon Rhubarb Coffee Cake recipe.
FAQs
Q: Can I use frozen rhubarb for this loaf?
A: Yes. Thaw and drain frozen rhubarb well, then pat dry before tossing with cornstarch so excess moisture won’t make the batter soggy.
Q: How do I prevent the rhubarb from sinking to the bottom?
A: Toss each piece with a little flour or cornstarch before folding into the batter and fold gently to distribute evenly.
Q: Can I make this loaf dairy-free?
A: Substitute plant-based butter and a dairy-free yogurt or milk alternative; the texture will be slightly different but still delicious.
Q: How can I tell when the loaf is done?
A: Insert a toothpick into the center — it should come out with a few moist crumbs but not wet batter. The edges will also begin to pull away from the pan.
Lemon Rhubarb Loaf Cake
- Total Time: 75 minutes
- Yield: 8 servings
- Diet: Vegetarian
Description
A cozy loaf cake featuring tart rhubarb and bright lemon flavors, finished with a glossy glaze.
Ingredients
- 1 1/2 cups all-purpose flour
- 1 tsp baking powder
- 1/2 tsp baking soda
- 1/4 tsp fine salt
- 1/2 cup unsalted butter, softened
- 3/4 cup granulated sugar
- 2 large eggs, at room temperature
- 1 tsp vanilla extract
- 1/4 cup plain yogurt or buttermilk
- 1/4 cup milk
- Zest of 2 lemons
- 1/3 cup fresh lemon juice (about 2 lemons)
- 1 1/2 cups rhubarb, chopped into 1/2-inch pieces
- 1 tbsp cornstarch (tossed with rhubarb)
- For the glaze: 1 cup powdered sugar and 2-3 tbsp lemon juice
Instructions
- Preheat the oven to 350°F (175°C). Grease a 9×5-inch loaf pan and line with parchment for easy removal.
- Toss chopped rhubarb with cornstarch in a small bowl so the pieces won’t sink and will release less liquid.
- Whisk together flour, baking powder, baking soda, and salt in a medium bowl.
- Beat the butter and sugar until pale and fluffy (about 2–3 minutes). Add eggs one at a time, mixing well after each. Stir in vanilla and lemon zest.
- Mix in half the dry ingredients, then the yogurt and milk, then the remaining dry ingredients. Stir just until combined.
- Fold the rhubarb into the batter so it’s evenly distributed.
- Pour batter into the prepared loaf pan. Bake for 50–60 minutes, or until a toothpick comes out with a few moist crumbs. Tent with foil if the top browns too quickly.
- While the loaf cools in the pan for 10 minutes, mix lemon juice with 2 tbsp sugar and prick the top with a skewer. Spoon the lemon soak over the loaf so it absorbs into the crumb.
- When cool, whisk powdered sugar and remaining lemon juice until pourable and drizzle over the loaf.
Notes
Use fresh, firm rhubarb for best results. Room-temperature ingredients improve texture.
- Prep Time: 15 minutes
- Cook Time: 60 minutes
- Category: Dessert
- Method: Baking
- Cuisine: American