Lebni Tart

Name: Lebni Tart
Ingredients: 1 stick unsalted butter, melted (for crust); 1/4 cup Granulated Sugar (for crust); 3/4 tsp pure vanilla extract (for crust); 1/4 tsp Salt (for crust); 1 cup all-purpose flour (for crust); 3 x large eggs (for filling); 1/4 cup Sugar (for filling); 2 tbsp Sugar (for filling); 1/8 tsp Salt (for filling); 1/2 tsp pure vanilla extract (for filling); 1 1/2 cup Cheese (kefir or lebni) (for filling); 1 x Egg Yolk, lightly beaten with a pinch of salt (for filling)