Custard Tart
This is one of the oldest desserts in English cooking—a shortcrust pastry case filled with egg custard, traditionally finished with a light dusting of nutmeg. The challenge is knowing exactly when to pull it from the oven: too early and the filling trembles, too late and it separates into scrambled texture.
Temperature control is everything here
The oven needs to be accurate—an unreliable oven will cook the custard unevenly or split the top. Use an oven thermometer if you're unsure. Also, make sure your pastry case is fully blind-baked and still warm when you pour in the custard; this helps it cook evenly from the bottom up.
- 9-inch tart tin with removable base
- rolling pin
- blind-baking weights or dried beans
- mixing bowls
- whisk
- fine sieve
- oven thermometer (recommended)
What goes in.
- 8 ozshortcrust pastry (store-bought or homemade)
- 4large eggs
- 10 fl ozwhole milk
- 2 fl ozdouble cream
- 1 tablespooncaster sugar
- 1/4 teaspoonsalt
- 1/2 teaspoonvanilla extract or a scrape of vanilla pod
- pinchfreshly grated nutmeg (for topping)
Knowing when the custard is set
The tart is done when the filling jiggles just slightly at the very center when you gently shake the tin—it should not move like liquid, but it shouldn't be completely rigid either. The residual heat will continue cooking it as it cools. If you wait until it looks fully firm in the oven, it will be overcooked and grainy by the time it cools.
The method.
Line the tart tin with pastry
Roll out your shortcrust to about 3mm thickness and press it into the tin, letting it overhang slightly. Prick the base all over with a fork. Chill for at least 15 minutes while you preheat the oven to 200°C (180°C fan).
Blind-bake the pastry
Line the chilled shell with greaseproof paper and fill with baking weights or dried beans. Bake for 15 minutes, then carefully remove the weights and paper. If the base looks wet, return it to the oven for 3-4 minutes. The pastry should be light golden and crisp to the touch. Remove from the oven and keep it warm.
Prepare the custard
Whisk together the eggs, milk, cream, sugar, salt, and vanilla in a bowl. Pour the mixture through a fine sieve into another bowl—this removes any stringy bits of egg white and creates a silky texture. Let it sit for a minute or two; any foam will rise to the surface and you can skim it off with a spoon.
Pour and bake
Pour the custard into the warm pastry case. Lower the oven to 180°C (160°C fan). Bake for 25-35 minutes, watching carefully after 25 minutes. The filling should barely wobble at the very center when you gently move the tin. The edges should look just set but never browned. A small knife inserted into the custard about 1 inch from the edge should come out clean; the very center will be softer.
Cool and finish
Remove the tart from the oven and let it rest in the tin for 5 minutes. Run a small knife around the inside edge and push the base up to release the tart onto a cooling rack. Once completely cool, dust the top with freshly grated nutmeg just before serving. The tart can be served at room temperature or slightly warm.
Other turns to take.
Portuguese Custard Tart
Use a higher ratio of egg yolks to whole eggs (6 yolks and 2 whole eggs instead of 4 whole eggs), reduce the milk to 6 fl oz, and increase the cream to 4 fl oz. Add a cinnamon stick to the custard as it sits. The result is richer, more intensely yellow, and slightly less stable—it should jiggle more noticeably. Dust the baked tart with cinnamon and a light scattering of icing sugar instead of nutmeg.
Treacle Custard Tart
Add 1 tablespoon of black treacle or dark molasses to the custard mixture and omit the vanilla. The custard becomes slightly darker and more complex. Proceed as normal. This version sits somewhere between custard and chess pie.
Lemon Custard Tart
Add the zest of 1 lemon and 1 tablespoon of lemon juice to the custard mixture. The acidity can cause the custard to set slightly faster, so watch the timing closely. Dust with caster sugar instead of nutmeg.
When it doesn't go to plan.
If your pastry case cracks during blind-baking, brush the crack with a little beaten egg white and return it to the oven for 2 minutes to seal it.
Cold custard is grainy custard. Always pour into a warm pastry case, not a cold one.
The oven temperature is more important than the exact baking time. A 10-degree difference in actual oven temperature can shift the baking time by 5 minutes or more.
Don't rely on the top browning to tell you it's done—custard tarts rarely brown noticeably on top. Go by the wobble test instead.
If you overbake and the custard splits, it's still edible but the texture will be slightly curdled. Serve it slightly chilled, which helps mask the issue.
The ones that keep coming up.
Can I make the pastry case ahead?
Yes. You can blind-bake the pastry case up to a day in advance and keep it in an airtight container. Reheat it gently in a 160°C oven for 3-4 minutes before pouring in the custard to ensure it's warm when the custard goes in.
Why does my custard sometimes have a watery layer on top?
Overbaking. The custard proteins have contracted and expelled their liquid. Pull it out sooner next time—when the center still has that slight jiggle. You're looking for barely-set, not fully-set.
Can I use a store-bought pastry case?
Yes, but blind-bake it first following the package instructions. Many store-bought cases are not pre-baked and will be soggy if you pour custard straight in.
Why does the recipe call for sieving the custard?
It removes air bubbles and any lumps of coagulated egg white, giving you a smooth, silky filling with no pockets or rough texture. It's not strictly necessary, but it's the difference between good and excellent.
How long does the tart keep?
Best eaten the same day or the next day. After that the pastry begins to soften from the moisture in the custard. Store it covered in the fridge and eat within 2 days. It doesn't freeze well because the custard texture breaks down.