Mary Berry Lemon Posset Recipe

This Mary Berry Lemon Posset Recipe is this creamy tart with zingy lemon filling in crisp pastry. It’s a smooth, creamy lemon pudding set inside a crisp tart base, and it always turns out better than I expect.

I like making this because it doesn’t need much effort. You only use a few basic things like double cream, sugar, and fresh lemons, yet the result feels rich and fresh at the same time. This recipe is inspired by Mary Berry’s original version, and I’ve kept it close to that classic style.

When you make this no cook lemon posset recipe of Mary Berry , you’ll notice how simple the steps are. No tricky skills needed, just a bit of care when heating the cream and adding the lemon. The filling sets on its own, which still feels a bit magic to me.

You can serve copycat lemon posset chilled after dinner, with a few fresh berries on top. It’s light, not too sweet, and easy to slice. If you want a no-fuss dessert that looks lovely on the table, this one is worth trying.

What is Lemon Posset?

Lemon posset is a traditional British dessert made from just cream, sugar, and lemon juice. It may sound too simple, but that’s what makes it special.

I always find it quite clever how the lemon juice thickens the cream without using gelatine or eggs.

The dish goes back many years in the UK. It was once served warm as a drink, but over time it changed into the chilled dessert we know today. The modern version is smooth, rich, and lightly sharp from the lemon.

When I make it, I notice how the texture sets on its own in the fridge. It turns silky and firm, almost like a soft custard but without any fuss.

The flavour is clean, not too sweet, and not too sour. That balance is what makes lemon posset so popular even now.

Why You’ll Love Mary Berry Lemon Posset

I reckon you’ll fall for this tart quick as I did. First time I made it, the kitchen smelled like lemon heaven, and it set perfect overnight. No soggy base or curdled mess – just creamy joy.

Here’s why it hooks you:

• Sharp and sweet kick: Lemons cut the richness, so one slice satisfies without heaviness.
• No bake filling: Heat, stir, chill. Beats faffy cheesecakes every time.
• Mary’s foolproof touch: Her steps nail it, even if you’re new to tarts.
• Looks dead fancy: Raspberries on top make it party-ready, but it’s everyday easy.
• Tastes better next day: Flavours mingle in the fridge for extra zing.

I baked the pastry crisp once, filled it, and mates cleared the plate. You’ll love how it impresses with zero stress.

Mary Berry Lemon Posset Ingredients

250g shortcrust pastry – I usually pick up a ready-made one from Tesco or Sainsbury’s when I want ease. It bakes into a crisp, golden base that holds the soft filling well and gives a nice contrast when you slice through.

600ml double cream – This is the key part of the filling. Go for a full-fat version like Elmlea or supermarket own brand. It gives that rich, smooth texture and helps the posset set properly without needing anything extra.

150g caster sugar – Finer than granulated sugar, so it melts quickly into the cream. It balances the sharpness of the lemon without making it too sweet. I stick to regular supermarket caster sugar, nothing fancy needed here.

Zest of 3 lemons – I always use fresh unwaxed lemons if I can find them. The zest brings a strong, fresh citrus smell and adds depth to the flavour. It lifts the cream and makes the whole dessert feel light and bright.

Juice of 3 lemons – Fresh lemon juice is important here. It reacts with the cream to thicken the mixture naturally. Bottled juice won’t give the same fresh taste, so I always squeeze my own for best results.

Fresh raspberries – I like using a small punnet from Aldi or M&S for topping. They add a pop of colour and a soft, slightly sharp bite that works well with the creamy filling. You can swap them if needed, but they do finish it nicely.

Ingredients Substitutions & Variations

• No double cream? Use whipping cream, but it sets softer – add a splash more lemon.
• Pastry woes? Shop-bought shortcrust works fine; roll thin for crunch.
• Less sugar? Try 120g for sharper kick, but don’t skip full melt.
• Lime twist: Swap lemons for limes, zest and juice – tropical vibe.
• Nutty base: Mix ground almonds into pastry for extra crunch.
• Vegan go: Coconut cream instead, but chill longer to set.

How To Make Mary Berry Lemon Posset

Step 1: Prepare and line the tart tin

Roll out the shortcrust pastry on a lightly floured surface until large enough to line a tart tin. If handling feels tricky, slide the base of the tart tin underneath the rolled pastry and use it to help lift and position it neatly into the tin.

Gently lift and press the pastry into the edges, ensuring it fits snugly without stretching or tearing.

Step 2: Prick and blind bake the pastry

Prick the base of the pastry all over with a fork to prevent it from puffing up during baking. Line with baking paper and fill with baking beans. Bake in a preheated oven at 180°C (160°C fan) for 15 minutes.

Remove the beans and paper, then return to the oven for a further 5 minutes until the pastry is pale golden, crisp around the edges, and fully cooked. Set aside to cool completely.

Step 3: Heat the cream, sugar, and lemon zest

Pour the double cream into a saucepan and add the caster sugar and lemon zest. Place over a medium heat and stir gently until the sugar has completely dissolved. Keep the mixture warm but do not allow it to boil vigorously.

Step 4: Cool slightly before adding lemon juice

Remove the pan from the heat and allow the mixture to cool slightly. This step is important to prevent curdling. Once slightly cooled, stir in the lemon juice. The mixture will begin to thicken naturally as the lemon reacts with the cream.

Step 5: Fill the tart case

Pour the lemon posset mixture into the cooled pastry case, smoothing the surface if needed.

Step 6: Chill until set

Place the tart in the fridge and chill for at least 4 hours, though overnight chilling gives the best result. The filling will set firmly without the need for gelatine or cornflour.

Step 7: Finish and serve

Once fully set, remove the tart from the tin carefully. Decorate the top with fresh raspberries for a bright, sweet contrast. Slice and serve chilled.

Recipe Tips for Best Mary Berry Lemon Posset

• Let the cream cool a bit before adding the lemon juice. I’ve rushed this before and it turned slightly grainy. Giving it a short rest keeps the texture smooth and even.
• Always use fresh lemons if you can. I’ve tried bottled juice once, and the taste just felt flat. Fresh zest and juice really bring out that bright, clean flavour.
• Give it enough time in the fridge. I know it’s tempting to check early, but it needs at least a few hours. I usually leave it overnight for a firmer, better set.
• Keep the heat gentle when warming the cream. If it boils too hard, it can affect the final texture. A slow heat works best and keeps everything nice and creamy.
• Go for full-fat double cream. I’ve tested lighter ones, and they don’t set as well. The richness also gives that proper classic feel you expect from this dessert.
• Make sure your tart base is fully cool before pouring in the filling. If it’s still warm, it can soften the base and spoil that crisp bite when serving.

What to Serve with Mary Berry Lemon Posset

I like to keep this dessert quite simple when it comes to serving. You don’t need much to make it feel complete. A few fresh berries on the side always work well and add a nice bit of colour to the plate.

You can also serve it with a small piece of shortbread or a light biscuit. I’ve tried this a few times, and the crunch goes really well with the soft, creamy filling. It gives a better balance in each bite.

If you want to add a bit more flavour, you can spoon over a little berry sauce. I find raspberry works best. Just don’t add too much, you still want that fresh lemon taste to stand out when you take a bite.

Mistakes To Avoid

• Skip blind bake: Pastry goes soggy quick – always bake crisp first.
• Boil cream hard: Splits the mix – gentle heat only.
• Add juice to hot cream: Curdles bad – cool 5 mins.
• Weak lemons: No zest punch – pick juicy ones.
• Rush chill: Won’t set firm – give 4 hours min.
• Thick pastry roll: Tough base – keep thin.

How To Store Leftover Mary Berry Lemon Posset

Keep any leftover tart in the fridge. Cover it well so it doesn’t dry out or take on other smells. It stays good for up to 2 days. The texture stays smooth if kept chilled properly.

Mary Berry Lemon Posset Recipe FAQs

Can I make this lemon posset ahead of time?

Yes, and I often do. In fact, it tastes better when made ahead. The filling needs time to set properly in the fridge. I suggest making it the day before serving. This gives it a firm and smooth texture, making slicing easier.

Why didn’t my lemon posset set?

This usually happens if the cream was not heated properly or if low-fat cream was used. The lemon juice reacts with full-fat cream to set the mixture. Also, not chilling long enough can stop it from firming up.

Can I freeze lemon posset tart?

I wouldn’t recommend freezing it. The texture may change once thawed. It can turn grainy or lose its smooth feel. It’s best enjoyed fresh from the fridge within a couple of days.

What type of lemons should I use?

I always go for fresh, ripe lemons. They give a better flavour and help the setting process. Avoid bottled juice as it doesn’t taste as fresh and may affect the result slightly.

Can I make it without a tart base?

Yes, you can. Just pour the filling into small pots or glasses and chill. It works well and saves time. The taste stays the same, just without the crunchy base.

How do I know when the posset is ready?

After chilling, the filling should feel firm but still soft when cut. It should hold its shape without being too stiff. If it still looks runny, give it more time in the fridge.

Can I use other citrus fruits?

Yes, I’ve tried lime and even orange. Lime gives a sharper taste, while orange is milder. You can mix them too, but lemon gives the classic flavour.

Why is my filling grainy?

This can happen if the cream was overheated or the lemon juice was added too quickly. Letting the mixture cool slightly before adding juice helps keep it smooth.

Is this dessert very sweet?

It has a balanced taste. The sugar adds sweetness, but the lemon cuts through it nicely. It doesn’t feel too heavy or overly sweet, which is why I like it after a meal.

Can I use shop-bought pastry?

Yes, and it works just fine. I do this when I want to save time. Just make sure to bake it properly so it stays crisp under the filling.

This Mary Berry Lemon Posset Recipe is one of those puddings that proves you don’t need a long list of ingredients or complicated methods to create something truly special. It’s simple, it’s stunning, and every single bite is worth it. The crisp pastry and smooth lemon filling together is something else entirely.

I proper hope you give this a go in your own kitchen. Once you’ve tried it, come back and let us know how it turned out.