Layers of crisp golden filo pastry or delicate semolina cake, soaked in aromatic orange blossom honey syrup and crowned with crushed pistachios.
Simmer the sugar, water, and lemon juice for 8 minutes into a light syrup; cool and add the orange blossom water.
Mix the semolina, yogurt, sugar, melted butter, and baking powder into a thick batter.
Let the batter rest for 30 minutes so the semolina swells.
Spread in a buttered tray, score into diamonds, and bake at 180C for 30-35 minutes until golden.
Pour the cold syrup over the hot basbousa and let it absorb before serving.