In another bowl, whisk 2 whole eggs and 1 egg white (reserve the yolk) with a fork. Add cream, cheese, salt, sugar and semolina. Mix to combine all ingredients and pour into prepared crust.
Bake Cheese Galette in 375 F (175 C) preheated oven for about 40 minutes. Let cool a little bit before serving.
* for savory Cheese Galette: omit sugar and use 1 tsp salt instead of 1/2 tsp