Preheat oven to 180C. Prepare the 20cm pie dish by greasing with olive oil and sprinkle with a little semolina. Set aside.
In a seperate bowl, beat the remaining egg and gently brush over the cooled custard. Place in the preheated oven and bake for around 45 minutes or until the top of the pie browns nicely. Set aside and serve at room temperature with a good dusting of cinnamon.