To make the dough:
Begin by creaming butter and cheese together until light using an electric mixer.
Sift flour and salt together.
Blend flour mixture into the creamed mixture.
Add 2 tbsp cold water and mix well using electric mixer until dough just starts to come together.
Shape into a disk and wrap in plastic wrap.
Chill 4 to 5 hours in refrigerator or overnight.
To Make Filling:
In a small saucepan, combine dates, brown sugar, and 1/4 cup water. Cook over medium heat until the consistency of jam. Let cool.
To assemble:
Roll dough out on a lightly floured surface to a 1/8 inch thickness.
Cut into circles using a 3 inch cookie cutter.
Place ½ tsp. of filling on half of the circle.
Fold in half and seal edges with tines of a fork. Repeat until all dough has been used.
If desired, brush tops with an egg wash. Bake on a parchment lined cookie sheet at 375° for 8 minutes or until lightly browned.