A rich and buttery French cake with a golden crust, dense crumb, and signature crosshatch top. Perfect for serving with coffee or tea, and even better the next day.
1 cup (2 sticks) unsalted butter, room temperature
3/4 cup granulated sugar
6 large egg yolks
2 cups all-purpose flour
1/4 tsp salt
Optional: 1 tsp vanilla or lemon zest
Egg Wash:
1 egg yolk
1 tsp water or milk
Preheat oven to 350°F (175°C). Grease and line an 8-inch round or square baking pan.
Cream butter and sugar until light and fluffy.
Add egg yolks one at a time, mixing well. Stir in vanilla or lemon zest if using.
Mix in flour and salt until just combined into a thick dough.
Press dough evenly into the pan. Smooth the top.
Brush with egg wash and use a fork to draw a crisscross pattern.
Bake for 35–40 minutes, until golden and set. Cool before slicing.
Store wrapped at room temperature for up to 4 days. Flavor improves after resting. Freeze for up to 3 months.