Creamy Lemon Tart with a Buttery Shortcrust Base
I made this for the first time on a sweltering July afternoon, using a bag of lemons I’d bought three days earlier and completely forgotten about. The filling set beautifully, the crust held — and then I cut into it and the whole thing collapsed sideways because I’d skipped chilling the base. It looked like a lemon landslide. The flavor, though, was so sharp and clean that everyone ate it anyway, straight from the tin with a spoon.
This recipe fixes every mistake I made that first time. You get a properly set, silky filling — tangy enough to make you squint slightly, balanced by a short, buttery crust that doesn’t go soft. It takes about 30 minutes of active work, uses ingredients you likely already have, and holds its shape when you slice it. No pastry degree required.
Pro Tip
The most common mistake with lemon tart filling is adding the lemon juice too early into the condensed milk mixture — the acid starts to curdle the eggs before they’ve had a chance to bind properly, and you end up with a grainy, slightly lumpy texture instead of a smooth set. Instead, whisk your egg yolks and condensed milk together first until fully combined and slightly thickened (about 2 minutes), then stream in the lemon juice slowly while whisking. That order of operations makes the difference between silky and scrambled.
Use fresh lemons — bottled juice lacks the volatile oils that give this tart its sharp, almost floral edge. You need about 3 medium lemons for ½ cup (120 ml) of juice. Sweetened condensed milk is the structural backbone here; don’t swap it for evaporated milk. For the crust, digestive biscuits work exactly as well as a traditional shortcrust if you’re short on time — 7 oz (200 g) crushed with 3½ oz (100 g) melted butter, pressed in and chilled.
Creamy Lemon Tart with a Buttery Shortcrust Base
8
servings20
minutes18
minutes390
kcal2
hours2
hours38
minutesIngredients
1¾ cups (175 g) all-purpose flour
2 tbsp (25 g) powdered sugar
½ tsp fine salt
4 oz (115 g) cold unsalted butter, cubed
1 egg yolk
2–3 tbsp (30–45 ml) ice-cold water
3 large egg yolks
14 oz (397 g) sweetened condensed milk (1 standard can)
½ cup (120 ml) fresh lemon juice (about 3 medium lemons)
1 tbsp finely grated lemon zest
½ cup (120 ml) heavy cream, for whipping (optional topping)
Directions
- Make the pastry. Pulse flour, powdered sugar, salt, and cold butter in a food processor until the mixture looks like damp sand — no visible butter chunks, but not yet a paste. Add the egg yolk and water one tablespoon at a time; the dough should just hold together when you pinch it.
- Press and chill. Press the dough evenly into a 9-inch (23 cm) tart tin, going up the sides, then refrigerate for 30 minutes. Don’t skip this — cold dough shrinks less in the oven and keeps its shape.
- Blind bake at 375°F (190°C) for 15 minutes with baking weights, then 5 minutes uncovered. The crust should smell nutty and look pale gold at the edges — that’s when it’s ready, not before.
- Make the filling. Whisk the 3 egg yolks and condensed milk together for 2 full minutes until slightly thickened. Then stream in the lemon juice slowly while whisking — this order keeps the filling smooth.
- Add zest and pour. Stir in the lemon zest, then pour the filling into the warm crust. The filling will look very liquid — that’s correct; it sets in the oven.
- Bake at 325°F (165°C) for 15–18 minutes. The center should wobble like set gelatin when you nudge the tin — not slosh. Pull it at the wobble stage; it firms up as it cools and over-baking makes it rubbery.
- Cool completely, then refrigerate for at least 90 minutes before slicing. In my kitchen, I’ve found that 2 hours gives the cleanest slices — worth the wait.
Variations
For a no-bake version, swap the shortcrust for a pressed biscuit-and-butter base (digestives or graham crackers both work) and add 1 tsp of gelatin dissolved in 2 tbsp warm water to the filling before pouring — chill for 4 hours instead of baking. For a sharper, more bitter edge, replace half the lemon juice with fresh lime juice and add a pinch of flaky salt on top before serving.
Serving Suggestions
A dollop of lightly whipped cream cuts the acidity without masking it — just cream, no sugar. Fresh raspberries alongside add color and a second hit of tartness that works well. A small scoop of plain vanilla ice cream turns a single slice into a proper dessert for guests.
FAQ
Can I make this tart the day before?
Yes — it actually slices better after a full night in the fridge. Cover it loosely with plastic wrap once it’s fully cold to avoid condensation on the surface.
My filling didn’t set — what went wrong?
The most likely cause is underbaking: if the center was still liquid (not wobbling like jelly) when you pulled it, it needed more time. An oven thermometer is worth using here — most home ovens run 15–25°F (8–14°C) cooler than the dial says.
Can I use store-bought shortcrust pastry?
Absolutely — blind bake it the same way and the filling works just as well. The texture will be slightly softer and less crumbly than homemade, which some people actually prefer. It does make you wonder what else you could pour this filling into.
