I first made this lemon rhubarb loaf on an overcast spring afternoon when rhubarb was at its peak. The loaf balances tart rhubarb and bright lemon with a tender, buttery crumb and a simple glaze that makes it perfect for coffee break sharing or a light dessert after dinner. If you enjoy lemon-forward mains as much as sweets, you might also like my lemon bowtie chicken with broccoli, which pairs the same citrusy brightness in a savory way.

Why you’ll love this dish

This loaf is quick to make, uses pantry basics, and celebrates seasonal rhubarb without fuss. It’s great for brunch, potlucks, or an afternoon pick-me-up because the lemon keeps the taste bright and the rhubarb gives a pleasant tart bite that stops the cake from feeling too sweet. Families love it because the texture is soft enough for kids but interesting enough for adults who want a slightly sophisticated bake.

Preparing Lemon Rhubarb Loaf with Glaze

Before you start: preheat, prep, and expect a single-bowl batter with a gentle fold for the fruit. You’ll cream butter and sugar, add eggs, bright lemon juice and zest, then fold in dry ingredients and rhubarb. Bake in a loaf pan, cool briefly, and finish with a quick powdered sugar-lemon glaze. Total hands-on time is about 20 minutes and bake time is roughly 50 to 60 minutes.

What you’ll need

• 1/2 cup unsalted butter, softened (or use salted and reduce added salt elsewhere)
• 1 cup granulated sugar
• 1 1/2 cups all-purpose flour
• 1/2 teaspoon baking powder
• 1/2 teaspoon baking soda
• 2 large eggs, room temperature
• 1/4 cup fresh lemon juice (about 1 medium lemon)
• Zest of 1 lemon
• 1 cup rhubarb, chopped into 1/2-inch pieces (fresh is best; see substitutions below)
• 1 cup powdered sugar
• 2 to 3 tablespoons lemon juice for the glaze

Ingredient notes and swaps:

• If you want a lighter crumb, replace 2 tablespoons of flour with fine almond flour.
• Frozen rhubarb can work; thaw and drain well to avoid extra moisture.
• For a dairy-free version, use a stick of firm vegan butter and proceed the same way.

Step-by-step instructions

1. Preheat your oven to 350°F (175°C). Grease a 9×5-inch loaf pan and set it aside.
2. In a mixing bowl, cream the softened butter and granulated sugar until the mixture looks light and fluffy. This traps air for a tender loaf.
3. Add the eggs one at a time, beating well after each addition so the batter stays smooth.
4. Stir in the 1/4 cup lemon juice and the lemon zest until they are evenly distributed.
5. In a separate bowl, whisk together the flour, baking powder, and baking soda.
6. Gradually fold the dry ingredients into the wet mixture. Stir until just combined; stop when you no longer see streaks of flour. Overmixing will make the loaf tough.
7. Gently fold in the chopped rhubarb until it is evenly spread through the batter.
8. Pour the batter into the prepared loaf pan and smooth the top with a spatula.
9. Bake for 50 to 60 minutes, or until a toothpick inserted in the center comes out clean or with just a few moist crumbs. If the top is browning too quickly, tent with foil for the last 15 minutes.
10. Let the loaf cool in the pan for about 10 minutes, then turn it onto a wire rack to cool completely.
11. For the glaze, whisk the powdered sugar with 2 to 3 tablespoons lemon juice until smooth. Drizzle the glaze over the cooled loaf and let it set before slicing.

Best ways to enjoy it

Serve slices at room temperature for the best texture. It pairs beautifully with a cup of tea or coffee for breakfast or an afternoon snack. For a brunch spread, offer thin slices alongside fresh berries and yogurt. If you want a savory contrast on the table, a warm slice goes nicely with a hearty main like meatloaf with mushroom gravy for a balanced sweet-tart finish.

Storage and reheating tips

Store the loaf in an airtight container at room temperature for up to 2 days. To extend freshness, refrigerate for up to 5 days; bring slices to room temperature before serving for best flavor. To freeze, wrap the whole loaf or individual slices tightly in plastic wrap and place in a freezer bag for up to 3 months. Thaw overnight in the refrigerator, then warm briefly in a low oven or microwave before serving. Always discard any baked goods that develop off smells, visible mold, or an unusual texture.

Pro chef tips

• Use room-temperature eggs and butter. They emulsify more easily and produce a smoother batter.
• Zest the lemon first, then juice it. Zesting after juicing is harder and wastes oils.
• Toss rhubarb in a tablespoon of flour before folding it into the batter to help prevent it from sinking.
• If your rhubarb is extra tart, reduce the lemon in the glaze by half a tablespoon so the sweetness balances.
• Rotate the pan halfway through baking if your oven heats unevenly.

Flavor swaps

• Berry swap: replace half the rhubarb with diced strawberries for a rhubarb-strawberry loaf.
• Citrus twist: add 1 teaspoon of orange zest with the lemon for rounded citrus notes.
• Nutty variation: fold in 1/3 cup toasted chopped pistachios or almonds for crunch.
• Mini loaves or muffins: pour batter into lined muffin tins and bake 18 to 22 minutes for individual treats.

Helpful answers

Can I use frozen rhubarb instead of fresh?

Yes. Thaw frozen rhubarb fully and drain off excess liquid, then pat dry with paper towels. To avoid a soggy loaf, toss the drained pieces in a tablespoon of flour before folding into the batter.

What if I do not have lemons?

You can substitute with 3 tablespoons of bottled lemon juice, though fresh lemon zest is hard to replicate. If you have limes on hand, use lime zest and juice for a different but pleasant citrus profile.

Can I make this loaf ahead of time for a party?

Absolutely. Bake and glaze the loaf the day before, store it covered at room temperature if serving within 24 hours, or refrigerate and bring back to room temperature before serving. For longer storage, freeze slices and thaw as needed.

How do I know when it is fully baked?

Insert a toothpick into the center; it should come out clean or with a few moist crumbs but no sticky batter. The top should be golden and slightly spring back when pressed gently.

Can I make this gluten free?

Yes. Use a 1:1 gluten-free flour blend that contains xanthan gum and follow the recipe the same way. Texture may be slightly different but the lemon and rhubarb flavors will still shine.

Lemon Rhubarb Loaf

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A delightful loaf that combines the tartness of rhubarb with bright lemon, perfect for coffee breaks or light desserts.

• Prep Time: 20 minutes
• Cook Time: 60 minutes
• Total Time: 80 minutes
• Yield: 8 servings 1x
• Category: Dessert
• Method: Baking
• Cuisine: American
• Diet: Vegetarian

Ingredients

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• 1/2 cup unsalted butter, softened
• 1 cup granulated sugar
• 1 1/2 cups all-purpose flour
• 1/2 teaspoon baking powder
• 1/2 teaspoon baking soda
• 2 large eggs, room temperature
• 1/4 cup fresh lemon juice
• Zest of 1 lemon
• 1 cup rhubarb, chopped into 1/2-inch pieces
• 1 cup powdered sugar
• 2 to 3 tablespoons lemon juice for the glaze

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Instructions

1. Preheat your oven to 350°F (175°C). Grease a 9×5-inch loaf pan and set it aside.
2. Cream the softened butter and granulated sugar until light and fluffy.
3. Add the eggs one at a time, beating well after each addition.
4. Stir in the lemon juice and zest until evenly distributed.
5. Whisk together the flour, baking powder, and baking soda in a separate bowl.
6. Fold the dry ingredients into the wet mixture until just combined.
7. Gently fold in the chopped rhubarb until evenly mixed.
8. Pour the batter into the prepared loaf pan and smooth the top.
9. Bake for 50 to 60 minutes, or until a toothpick comes out clean.
10. Let the loaf cool for about 10 minutes, then transfer to a wire rack.
11. Whisk powdered sugar with 2 to 3 tablespoons of lemon juice for the glaze.
12. Drizzle the glaze over the cooled loaf and let it set before slicing.

Notes

For a lighter loaf, substitute 2 tablespoons of flour with fine almond flour. Store in an airtight container for up to 2 days at room temperature or up to 5 days in the refrigerator.

Nutrition

• Serving Size: 1 slice
• Calories: 250
• Sugar: 15g
• Sodium: 120mg
• Fat: 10g
• Saturated Fat: 6g
• Unsaturated Fat: 4g
• Trans Fat: 0g
• Carbohydrates: 35g
• Fiber: 1g
• Protein: 3g
• Cholesterol: 40mg