Gâteau Basque

Gâteau Basque is the iconic pastry of the French Basque Country, where it has been baked since at least the 18th century. This tender, buttery cake is filled with a rich pastry cream and consumed at every occasion from breakfast to dinner-party dessert. It is a proud heirloom of Basque identity.

Serves: 8

Ingredients

For the pastry dough:

• 300g (2½ cups) all-purpose flour
• 200g (7 oz / 14 tbsp) unsalted butter, softened
• 150g (¾ cup) caster sugar
• 2 large eggs plus 1 egg yolk
• 1 tsp baking powder
• ½ tsp fine salt
• 1 tsp vanilla extract
• Zest of 1 lemon

For the pastry cream filling:

• 400ml (1⅔ cups) whole milk
• 3 egg yolks
• 80g (⅓ cup) caster sugar
• 40g (¼ cup) all-purpose flour
• 1 tbsp dark rum
• 1 tsp vanilla extract

For assembly:

• 1 egg yolk mixed with 1 tbsp milk (egg wash)

Instructions

1. Make the pastry cream: Heat milk to just below simmering. Whisk egg yolks and sugar until pale, then whisk in flour. Pour hot milk over egg mixture in a thin stream, whisking constantly. Return to the pot and cook over medium heat, stirring continuously, for 4–5 minutes until very thick and bubbling. Stir in rum and vanilla. Cover with plastic wrap pressed directly onto the surface and refrigerate until cold, at least 2 hours.
2. Make the dough: Beat softened butter and sugar until light and fluffy, about 3 minutes. Add eggs and yolk one at a time, beating after each. Mix in vanilla and lemon zest. Fold in flour, baking powder, and salt until a soft dough forms. Divide into two-thirds and one-third portions. Wrap each and refrigerate for 1 hour.
3. Preheat oven to 180°C (350°F). Grease a 23cm (9-inch) tart tin or springform pan.
4. Press the larger dough portion into the base and up the sides of the tin (about 3mm thick). Spread the cold pastry cream in an even layer, leaving a 1cm border. Roll out the smaller dough portion and lay it over the top, pressing edges together to seal.
5. Brush the surface with egg wash. Use a fork to scratch the traditional crosshatch pattern across the top.
6. Bake for 35–40 minutes until deeply golden. Cool completely in the tin — at least 1 hour — before slicing. The cake is best served at room temperature.

Cook's Notes: The crosshatch pattern is not merely decorative — it is the mark of an authentic Gâteau Basque and a point of regional pride. The cake keeps extremely well, actually improving over 24–48 hours as the pastry cream softens the crust from within. Rum in the filling is traditional; armagnac is an excellent substitute.