Sesame Cookies (Kue kering Wijen)

For us nothing more suitable in our tea/ coffee time but cookies. And this sesame cookies just perfect one for you to try also. 

Ingredients:
 250 gr butter, room temperature
 2 medium eggs, room temperature
 80 g (± 3 tablespoons) sugar
 80 g (± 1/3 cup) sesame paste
 ¼ tsp fine salt
 400 g all-purpose flour
 5 g (± 2 tsp) baking powder

To spread:
 1 egg yolk, beaten
 Sesame seeds to taste