ABOUT THIS RECIPETart, Soft and Golden
These tarts are all about three distinct textures: a firm, crisp base, a smooth filling and strawberries that soften in the oven and release some of their juices. Lemon gives the curd a pronounced fresh flavour; butter rounds it out and helps the filling set as it cools. The strawberries add sweetness and a slightly jammy note, without needing to be cooked down into a sauce.
Small tart tins about 8 to 9 centimetres across give a pleasing ratio of pastry to filling. Prick the bases before they go in the oven and blind bake them with baking paper and baking beans or dried pulses. The weight keeps the bases flat, leaving enough room for the curd. Remove the paper and weights in good time so the bases can turn golden brown and crisp in the middle too. Let the bases cool completely before filling them.
For smooth curd, gentle, even heat matters more than speed. Stir constantly with a whisk in a heavy-based saucepan and don’t let the mixture boil: the eggs can curdle, leaving little flecks. The curd is ready when it’s thick enough to coat the back of a spoon. A kitchen thermometer is useful, but not essential. Strain the filling if you want an extra-smooth result or if any egg has curdled.
Strawberries are usually at their best in late spring and summer. Choose ripe, firm berries; very soft fruit can quickly fall apart as it roasts. Out of season, you can replace them with firm plums or raspberries, allowing a shorter roasting time for raspberries. Don’t have small tart tins? Bake the pastry in one tart tin about 20 centimetres across and allow a little extra baking time for the base.
Add the olive oil at the very end: a few drops of fruity, not-too-bitter oil give a gentle peppery finish that works well with the lemon and strawberries. Ideally, serve the tarts at room temperature, with the strawberries still lukewarm. You can make the baked bases ahead and store them in an airtight container. Keep filled tarts covered in the fridge and eat them within two days; don’t leave them out of the fridge for an extended period.