Preheat your oven to 350°F (175°C) and grease a baking dish.
In a bowl, mix semolina, yogurt, sugar, coconut, vegetable oil, baking powder, vanilla extract, and lemon zest.
Pour the batter into the greased dish and bake for 35 minutes or until golden.
While baking, prepare the syrup: Combine sugar, water, and lemon slice in a saucepan. Simmer until it thickens.
Once the revani is baked, pour the hot syrup over it evenly.
Let it cool and absorb the syrup before serving. Enjoy your homemade revani!