This zesty rhubarb lemon drizzle cake combines the tartness of fresh rhubarb with a bright, tangy lemon glaze. The moist crumb is perfect for spring gatherings and summer afternoon teas.
The preparation takes just 20 minutes, followed by 50 minutes of baking time. The rhubarb pieces soften beautifully during baking, creating pockets of fruity sweetness that balance the sharp citrus notes.
The magic happens when you pour the lemon drizzle over the hot cake, allowing it to soak into every crumb. Serve with crème fraîche or whipped cream for an extra indulgent touch.
The window was open and a warm breeze carried the smell of my neighbors rhubarb patch right into my kitchen, and that was all the excuse I needed to finally try combining it with lemon in a single cake.
I brought this to a friends rooftop gathering last June and watched three polite people become territorial over the final slice within minutes.
Ingredients
- All-purpose flour (200 g): Provides the sturdy backbone this wet batter needs to hold together.
- Baking powder (2 tsp): Gives the cake its gentle lift without making it airy like a sponge.
- Salt (1/4 tsp): Just enough to sharpen the sweet and tart flavors.
- Unsalted butter, softened (125 g): Creates richness and that tender crumb people always compliment.
- Granulated sugar (175 g): Sweetens generously but lets the rhubarb and lemon stay in charge.
- Large eggs (2): Bind the batter together and add structure.
- Lemon zest (from 1 lemon): The fragrant oils here do more heavy lifting than the juice itself.
- Vanilla extract (1 tsp): Rounds out the sharpness and ties everything together warmly.
- Milk (100 ml): Loosens the batter just enough so the rhubarb can distribute evenly.
- Rhubarb, trimmed and diced (250 g): The star, cut small so every bite gets a tangy surprise.
- Lemon juice (from 1 large lemon): Forms the sharp, sweet soaking syrup for the drizzle.
- Granulated sugar for drizzle (75 g): Dissolves into the juice to create that irresistible sticky crust.
- Extra lemon zest and icing sugar (optional): For a pretty finish if you are serving guests.
Instructions
- Prepare the oven and tin:
- Heat the oven to 180 degrees C (350 degrees F), grease the tin, and line the base with baking paper so nothing sticks.
- Sift the dry ingredients:
- Sift the flour, baking powder, and salt into a bowl, then set it aside while you work on the butter.
- Beat butter and sugar:
- Cream them together until the mixture turns noticeably paler and looks soft and cloudlike.
- Add eggs and flavor:
- Drop in one egg at a time, beating well after each, then stir in the lemon zest and vanilla until everything smells incredible.
- Combine flour and milk:
- Fold in half the flour mixture gently, pour in half the milk, and repeat so the batter stays smooth rather than overworked.
- Fold in the rhubarb:
- Toss the diced pieces in with a light hand so they spread through the batter without sinking to the bottom.
- Bake the cake:
- Spoon the batter into the tin, smooth the top, and bake for 45 to 55 minutes until a skewer poked in the center comes out clean.
- Make the lemon drizzle:
- While the cake bakes, stir the lemon juice and sugar together until the sugar fully dissolves into a thin syrup.
- Soak the hot cake:
- Remove the cake from the oven, immediately prick it all over with a skewer, and slowly pour the syrup so it seeps into every hole.
- Cool and finish:
- Let it rest in the tin for 15 minutes, turn it onto a wire rack, and dust with icing sugar or extra zest if you like.
One rainy Tuesday I ate a slice standing at the counter with my eyes closed, and I realized some cakes do not need a special occasion to feel like a gift.
Swapping the Fruit
Rhubarb has a narrow season, so when it fades I reach for raspberries or hulled strawberries and reduce the sugar in the drizzle by a tablespoon since berries are sweeter.
Serving Suggestions
A dollop of cold creme fraiche cuts through the sweetness and adds a slight tang that makes each bite more interesting than the last.
Getting Ahead and Storing
This cake actually improves overnight as the drizzle settles into the crumb, making it a brilliant choice when you want to bake a day before your gathering.
- Wrap it tightly in foil and it stays moist on the counter for up to three days.
- You can freeze individual slices between sheets of baking paper for rushed weekday treats.
- Always bring it back to room temperature before serving so the texture softens again.
Share this with someone who thinks rhubarb is only for crumbles, and watch their face change after the first bite.
Recipe Questions & Answers
- → Can I use frozen rhubarb instead of fresh?
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Yes, frozen rhubarb works well in this cake. Thaw it first and pat dry with paper towels to remove excess moisture before folding into the batter. You may need to increase the baking time by 5-10 minutes.
- → How should I store this cake?
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Store in an airtight container at room temperature for up to 3 days. The lemon drizzle keeps the cake moist, so it actually improves slightly on the second day. For longer storage, wrap well and freeze for up to 3 months.
- → Can I make this cake gluten-free?
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Yes, substitute the all-purpose flour with a good quality gluten-free flour blend containing xanthan gum. The texture may be slightly denser but equally delicious. Ensure your baking powder is certified gluten-free.
- → Why must I pour the drizzle over a hot cake?
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Pouring the lemon drizzle over a hot cake allows the syrup to soak deeply into the crumb, creating that signature moist texture and distributing the lemon flavour evenly throughout. The warmth helps the sugar dissolve completely.
- → Can I make individual portions instead of one large cake?
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Absolutely! Use a muffin tin or individual cake tins and reduce the baking time to 18-25 minutes for muffins or 25-35 minutes for small cakes. Adjust the drizzle quantity accordingly.
- → What can I serve with this cake?
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Crème fraîche, whipped cream, or clotted cream are classic accompaniments. For a lighter option, serve with Greek yoghurt. The cake also pairs beautifully with a cup of Earl Grey tea or a glass of Riesling.