This is a homemade vanilla custard — a pourable, silky, egg yolk custard made with whole milk, caster sugar (superfine sugar), cornflour (cornstarch) and real vanilla, cooked gently on the hob until thick and glossy. It serves four to six, keeps in the fridge for several days, and is considerably simpler to make than its reputation suggests. It is part of my 'Small Batch Bakes' series and is the essential, non-negotiable accompaniment to the perfect apple crumble — though once you have made it you will find reasons to pour it over almost everything else too.

Why I Created This Recipe

Honestly I so rarely make my own custard, so in a way I created this recipe to remind myself how easy it is!! I also wanted to ensure that was a smaller batch, to reduce leftovers and to minimise any waste.

The custard itself really couldn't be easier, the only thing you need to watch out for is not to scramble your eggs while adding the milk, and then when thickening. Keep the heat low and be patient and it will come together in no time at all!

About the Small Batch Bakes Series

Small Batch Bakes is a series dedicated to baking and making in smaller, more manageable quantities — recipes that give you something genuinely special without the commitment of a full-sized batch. This vanilla custard is part of the series, designed to serve four to six alongside the perfect apple crumble and making just the right amount for a pudding for the week without litres of custard going to waste.

What Is a Pouring Custard?

There are several types of custard in British cooking, and it is worth knowing which this one is. A pouring custard — also called crème anglaise in French cooking — is a thin, pourable, egg-based sauce made by gently cooking egg yolks, sugar and milk (or cream) together until just thickened. It is not the thick, set custard used to fill pastries or tarts (that is a pastry cream or crème pâtissière), and it is not the firm, sliceable custard used in a trifle (which is set with extra egg or gelatine). It is a flowing, silky sauce that coats the back of a spoon and pours generously over puddings — exactly what apple crumble needs.

The cornflour (cornstarch) in this recipe gives it a small amount of additional stability, which makes it slightly more forgiving to cook and helps prevent it from splitting if the heat gets a little too high. It is a practical addition that makes the recipe more reliable without altering the flavour or texture in any meaningful way.

Why You'll Want to Make This Recipe

Simpler Than You Think

The reputation of homemade custard as something difficult or risky is largely undeserved. This recipe is genuinely straightforward — the cornflour (cornstarch) adds stability, the low heat prevents scrambling, and the method is clearly laid out. Follow the steps and you will have a perfect custard every time.

Incomparably Better Than Shop-Bought

Homemade custard made with real egg yolks, whole milk and a proper vanilla pod is richer, silkier and more deeply flavoured than anything from a tin or a carton. Once you have made it, the shop-bought version will feel like a significant step backwards.

Keeps Well and Reheats Beautifully

This custard serves four to six and keeps in the fridge for up to three days — making it genuinely practical for solo cooks who want something special to hand throughout the week. It is excellent warm, and equally good cold poured straight from the fridge.

The Only Accompaniment for the Perfect Apple Crumble

This custard was developed alongside the perfect apple crumble specifically, and together they are one of the great British pudding combinations. Do not serve the crumble with anything else the first time you make it.

A Note on Vanilla

Real vanilla makes a significant difference in this custard — more so than in almost any other recipe, because custard is a vehicle for vanilla flavour in a way that most dishes are not. The milk heats gently with the vanilla, absorbing the flavour slowly over several minutes, which means every element of the vanilla's complex flavour profile — the warm, floral, slightly woody notes as well as the sweetness — makes it into the finished custard.

A vanilla pod gives the richest, most rounded result. Split the pod lengthways, scrape the seeds directly into the milk — the pod itself contains a significant amount of flavour and should never be thrown away. Store in a jar with caster sugar to create vanilla sugar, then you can also infuse the pod in something like milk or syrup too.

If you are using vanilla extract, one teaspoon stirred into the milk before heating works well — use a good quality extract rather than vanilla flavouring, which is synthetically produced and noticeably inferior. For more on vanilla as an ingredient, see the note in the Marcella Hazan tomato sauce with vanilla post.

My Top Tips for the Perfect Homemade Custard

• Whisk the egg yolks, sugar and cornflour (cornstarch) together until you have a completely smooth, pale paste before the milk goes anywhere near them. Any lumps of cornflour at this stage will remain as lumps in the finished custard.
• Heat the milk to a gentle simmer — not a rolling boil. You want to see small bubbles breaking the surface around the edges of the pan, not a vigorous boil. Overheated milk added to egg yolks can begin to cook them before they are properly combined, which can result in scrambled egg rather than custard.
• Add the warm milk to the egg mixture slowly and gradually, not all at once. Start by adding just a small splash — a few tablespoons — and whisk it in thoroughly before adding more. This process, called tempering, gradually raises the temperature of the egg yolks so they can accept the hot milk without scrambling. Pour in a thin, steady stream, whisking constantly, until all the milk has been incorporated.
• Ensure the bowl is stable before you start adding the milk. Place it on a damp tea towel (dish towel) to stop it moving — you need both hands free, one to pour and one to whisk, and a sliding bowl will make this very difficult.
• Return the custard to a low heat and stir continuously with a spatula, reaching into the corners of the pan. The custard thickens gradually and then quite suddenly — keep stirring and keep the heat low. It is ready when it coats the back of the spatula and a line drawn through it with your finger holds its shape.
• Do not turn the heat up to speed the process along. This is the most common mistake made when cooking custard, and it is the one most likely to result in scrambled egg. Low and slow is the only way — the custard will thicken, but it needs time.
• If the custard does begin to look grainy or slightly scrambled around the edges, remove it from the heat immediately and whisk vigorously — this can sometimes rescue it. Pouring it through a fine sieve will remove any small lumps and give a smooth result even if it has caught very slightly.
• Pour the finished custard into a warm jug rather than leaving it in the pan. It will continue to thicken in the residual heat of the pan even off the heat, and transferring it immediately stops the cooking and keeps it at the right pouring consistency.
• If you are making it ahead and reheating, add a small splash of milk when reheating over a very low heat and stir constantly — custard can catch and thicken quickly when reheated and benefits from a little extra liquid to loosen it.

Ingredients and Tools You'll Need

Essential Ingredients

• 50g caster sugar (superfine sugar) – sweetens the custard without making it cloying; the relatively modest quantity keeps the focus on the vanilla and egg flavour
• 1 tbsp cornflour (cornstarch) – adds stability and makes the custard more forgiving to cook; do not leave it out
• 3 egg yolks – the base of the custard; use the whites for meringues, an omelette or a frittata — they keep in the fridge for up to two days or can be frozen
• 600ml whole milk – full-fat milk gives the richest, most flavourful result; do not substitute with semi-skimmed or skimmed
• Seeds of 1 vanilla pod (or 1 tsp good quality vanilla extract) – see the note above on vanilla

Essential Tools

• 1 large heatproof mixing bowl – for whisking the egg yolk mixture and tempering in the warm milk
• 1 medium saucepan – for heating the milk and finishing the custard
• Balloon whisk – for whisking the egg yolk paste and tempering in the milk
• Heatproof spatula – for stirring the custard continuously on the hob
• Damp tea towel (dish towel) – to stabilise the bowl during tempering
• Fine sieve – optional, but useful for ensuring a perfectly smooth custard
• Warm jug – for serving

Storage & Make-Ahead

Storing in the Fridge

Pour the cooled custard into a sealed container or jug covered with cling film (plastic wrap) and refrigerate for up to three days. Press the cling film directly onto the surface of the custard to prevent a skin from forming — this is caused by the proteins in the milk drying out on contact with the air, and direct contact with the film prevents it entirely.

Serving Cold

Cold custard poured straight from the fridge is excellent — thicker and richer than when warm, it makes a lovely alternative to cream alongside the perfect apple crumble or spooned over a simple sponge. It is also very good eaten on its own, which I will not apologise for.

Reheating

Reheat gently in a small saucepan over a very low heat, stirring continuously, with a small splash of milk to loosen. Do not reheat in the microwave — it is difficult to control the heat evenly and the custard can scramble in hot spots. Low and slow on the hob, with constant stirring, gives a smooth, glossy result every time.

Dietary Variations

Dairy-Free

Whole milk can be replaced with a full-fat, unsweetened oat milk or coconut milk for a dairy-free custard. Oat milk gives the most neutral flavour and the closest result to the original; coconut milk gives a richer, slightly tropical custard that is delicious in its own right. Avoid very watery plant milks — the fat content of the milk is part of what gives the custard its silky body.

Using Cream Instead of Milk

For a richer, more indulgent custard, replace up to half the milk with double cream (heavy cream). The result will be noticeably thicker and more decadent — closer to a crème anglaise served in a restaurant. It is wonderful but considerably richer, and a smaller pour will go a long way.

Frequently Asked Questions

Is homemade custard difficult to make?

No — the key is low heat, constant stirring and patience. The cornflour (cornstarch) in this recipe adds extra stability that makes it more forgiving than a traditional crème anglaise, which means there is considerably less risk of it splitting or scrambling. Follow the method carefully and you will have a perfect custard.

What does tempering mean and why is it necessary?

Tempering is the process of gradually raising the temperature of the egg yolk mixture by slowly adding small amounts of warm liquid before the full quantity goes in. It is necessary because egg yolks begin to scramble at around 70°C — pouring 600ml of hot milk directly onto them would cook them immediately and give you sweetened scrambled eggs rather than custard. Adding the milk gradually allows the temperature of the egg mixture to rise slowly and safely, so by the time all the milk has been incorporated, the eggs are warm but not cooked. It sounds technical but in practice it simply means pouring slowly and whisking constantly.

Why has my custard gone lumpy?

The most likely cause is that the heat was too high at some point during cooking, causing the egg proteins to scramble. Pour it immediately through a fine sieve — this will remove the lumps and give you a smooth, pourable custard even if it has caught slightly. For future batches, keep the heat consistently low and stir without stopping.

Can I make this custard ahead of time?

Yes — and it is a great make-ahead recipe. Make it up to three days in advance, store in the fridge with cling film (plastic wrap) pressed directly onto the surface, and reheat gently when needed. It keeps and reheats beautifully.

What else can I serve this custard with?

It was made for the perfect apple crumble, but it is equally wonderful with a steamed sponge pudding, a slice of warm gingerbread, a bowl of poached pears, or spooned over a simple chocolate cake. Cold from the fridge it is excellent alongside a fruit tart or a crisp biscuit. It is one of the most versatile things you can make, and once you have a jug of it in the fridge you will find yourself reaching for it constantly.

Can I use the leftover egg whites for anything?

Absolutely — egg whites keep in the fridge in a sealed container for up to two days, or can be frozen for up to three months. Use them for meringues, pavlova, a simple egg white omelette, or to brush over pastry for a golden finish. Do not waste them.