Gluten-Free Lemon Drizzle Cake
Lemon drizzle cake is a British classic, and this gluten-free almond flour version is arguably better than the original. The almond flour produces a tender, moist crumb that stays fresh for days, while the bright lemon syrup soaks in to create a sticky, caramelised top that is impossible to resist. Unlike many gluten-free cakes that rely on gummy rice flour blends, this recipe uses a combination of finely blanched almond flour and a small amount of tapioca starch, the result is a lighter, finer crumb without any of the graininess or density that puts people off gluten-free baking.
Fresh lemon zest and juice are non-negotiable here. Bottled lemon juice simply cannot replicate the fragrant, volatile oils released when you zest a real lemon, and those oils are what give the cake its signature floral citrus intensity. For maximum flavour, zest your lemons before juicing them, and use a fine Microplane grater to get the bright yellow zest without any bitter white pith.
The oil-based batter is another key reason this cake succeeds where butter-based versions often fail in gluten-free baking. Oil stays liquid at room temperature, which keeps the crumb moist and tender even after several days, a common challenge with gluten-free cakes that can turn dry and crumbly overnight. Light olive oil is the best choice here as it has a neutral flavour that lets the lemon shine; melted coconut oil also works beautifully and adds a very subtle tropical note that pairs surprisingly well with citrus.
The drizzle is applied immediately as the cake comes out of the oven, while the crumb is still hot and porous. This is the defining technique of a proper lemon drizzle cake, the hot cake absorbs the sugary lemon syrup, which then sets into a slightly crisp, glossy top as it cools. Resist the temptation to let the cake cool first. Pour the drizzle slowly and in stages, allowing each pour to absorb before adding the next, so it soaks evenly rather than pooling at the edges.
This recipe is naturally gluten-free, dairy-free, and grain-free, making it suitable for coeliac disease, gluten sensitivity, and grain-free diets. It contains eggs and almonds, so it is not suitable for egg-free or nut-free diets. The cake keeps beautifully for up to five days in an airtight container and genuinely improves on day two as the lemon syrup continues to permeate the crumb. Serve in generous slices alongside a pot of tea, or dress it up with a dollop of thick coconut cream and a twist of lemon zest for a more impressive dessert.
Ingredients
- 200 g blanched almond flour (not almond meal — blanched gives a finer, lighter texture; spoon and level when measuring by volume)
- 30 g tapioca starch or arrowroot (lightens the crumb and improves structure; cornflour also works but is not paleo)
- 150 g caster sugar or coconut sugar (caster sugar gives a cleaner flavour; coconut sugar adds a mild caramel depth and slightly darker crumb)
- 3 large eggs (room temperature — cold eggs can make the batter split)
- 120 ml light olive oil or melted coconut oil (light olive oil is neutral in flavour; coconut oil adds a subtle tropical note; avocado oil also works)
- 3 tbsp fresh lemon juice (approximately 2 lemons; always freshly squeezed — bottled juice lacks the fragrant volatile oils)
- 2 tbsp lemon zest (approximately 2–3 lemons; zest before juicing and use a fine Microplane for best results — avoid the white pith)
- 1 tsp pure vanilla extract (rounds out the citrus — do not substitute imitation vanilla)
- 1 tsp baking powder (gluten-free certified) (check the label if coeliac — some baking powders contain wheat starch)
- ¼ tsp sea salt (balances the sweetness and lifts the lemon flavour)
- 3 tbsp fresh lemon juice (for drizzle) (use the juice from the same lemons you zested for the cake)
- 3 tbsp icing sugar or honey (for drizzle) (icing sugar gives a classic crisp glaze; honey gives a softer, more golden finish — warm slightly if using honey)
Instructions
- 1
Preheat the oven to 175°C (155°C fan) / 350°F. Grease a 2lb (900g) loaf tin and line with baking paper.
Make sure your oven is fully preheated before the batter goes in — almond flour cakes need consistent heat from the start.
- 2
Whisk together the almond flour, tapioca starch, baking powder, and salt in a large bowl.
Whisk the dry ingredients thoroughly to distribute the baking powder evenly — lumps in almond flour can cause uneven rising.
- 3
In a separate bowl or jug, whisk together the eggs, sugar, oil, lemon juice, lemon zest, and vanilla until smooth.
Add the sugar to the wet ingredients rather than the dry — this helps it dissolve more evenly and prevents a grainy texture.
- 4
Pour the wet ingredients into the dry and fold together until just combined and smooth.
The batter will be slightly thicker than a traditional cake batter — this is correct. Do not be tempted to add extra liquid.
- 5
Pour into the prepared loaf tin and bake for 38–42 minutes until golden on top and a skewer inserted in the centre comes out clean.
Cover loosely with foil after 25 minutes if the top is browning too quickly. Almond flour browns faster than wheat flour due to its natural fat content.
- 6
While the cake is baking, mix the lemon juice and icing sugar together for the drizzle.
For a honey drizzle, warm the honey slightly to make it pourable. Combine with the lemon juice just before the cake comes out of the oven so it is ready to pour immediately.
- 7
As soon as the cake comes out of the oven, poke holes all over the surface with a skewer and slowly pour the drizzle over the hot cake.
Pour slowly in two or three small additions, allowing each to absorb before pouring more. This ensures the syrup soaks evenly through the crumb rather than pooling at the edges.
- 8
Allow to cool completely in the tin before slicing — at least 1 hour.
Patience here is key — cutting into a warm almond flour cake can cause it to crumble. It firms up considerably as it cools and slices far more cleanly.
Nutrition per serving
185kcal
Calories
5g
Protein
18g
Carbs
11g
Fat
2g
Fibre
13g
Sugar
120mg
Sodium
Pro Tips
- ✓
Always zest your lemons before juicing them, it is much easier, and the zest carries the most intensely fragrant lemon oils in the whole fruit.
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Use room temperature eggs. Cold eggs straight from the fridge can cause the oil to seize and the batter to look curdled, it will still bake, but room temperature eggs produce a smoother, more even crumb.
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Pour the drizzle over the cake immediately as it comes out of the oven, the hot, porous crumb will absorb the syrup much more effectively than a cooled cake, creating that signature sticky, glossy top.
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The cake is even better on day two. Once the lemon syrup has had overnight to soak fully through the crumb, the flavour deepens and the texture becomes even more tender.
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If your cake sinks in the middle, the most likely cause is underbaking. Gluten-free cakes can look done on top while still raw in the centre, always test with a skewer and wait for it to come out completely clean.
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For extra lemon intensity without adding more liquid, stir 1 tsp of lemon extract into the batter alongside the fresh juice and zest. You can also add 2 tbsp poppy seeds for a classic lemon-poppy seed variation.
Frequently Asked Questions
Variations
- •
Lemon Poppy Seed Cake
Stir 2 tbsp poppy seeds into the batter before baking for a classic lemon-poppy seed combination.
- •
Orange Almond Cake
Replace all lemon with orange zest and juice for a warmer, sweeter citrus version. Add 1 tsp cardamom for a Middle Eastern twist.
- •
Lime and Coconut Cake
Replace lemon with lime juice and zest, and add 3 tbsp desiccated coconut to the batter for a tropical variation.
Substitutions
- •Tapioca starch → Arrowroot powder or cornflour (Use equal quantities. Cornflour is not paleo but works well.)
- •Caster sugar → Coconut sugar or golden caster sugar (Coconut sugar gives a slightly darker colour but a wonderful caramel depth.)
- •Light olive oil → Melted coconut oil or avocado oil (Coconut oil adds a subtle coconut flavour that pairs well with lemon.)
🧊 Storage
Store in an airtight container at room temperature for up to 3 days or refrigerate for up to 5 days. The cake stays moist due to the lemon drizzle. Freeze individual slices wrapped in cling film for up to 2 months.
📅 Make Ahead
This cake is ideal for making 1–2 days ahead. Bake, drizzle, and store in an airtight container at room temperature. The lemon syrup continues to soak in, making the cake even more flavourful on day two.
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