Turkish borek

contributed by Idil U.

serves 4

1 pack of filo dough sheets (thawed overnight in fridge)
1 egg yolk

black sesame seeds
sauce: 1/2 cup olive oil

           1/2 cup water
           2 tablespoons plain yogurt
           1 egg
filling: 1 pound ground beef 
            1 medium onion

            1/2 cup hot water          
            1-2 tablespoons of tomato paste

            1 bunch parsley, chopped
            2 tablespoons olive oil
            1 teaspoon black pepper
            1 tablespoon oregano

            2 teaspoons red pepper flakes

             1/3 cup of currants
             salt

1. Heat olive oil in a skillet over medium heat. Add ground beef and cook until liquid is gone.
2. Add tomato paste and mix well. Add hot water and cook for 5 minutes.
3. Add currants and cook for another 5-10 minutes.
4. Turn off heat, add parsley and spices and set aside.
5. In a bowl, mix together olive oil, water, yogurt and 1 egg
6. Take a sheet of filo dough, brush with sauce and lay another sheet on top.
7. Put 1 tablespoon of filling and roll into long rolls. Repeat with remaining filo sheets until filling runs out.
8. In a small bowl mix egg yolk with 1-2 tablespoons of sauce. Brush the tops of each roll with this mixture. Sprinkle sesame seeds on top.
9. Spray a large cookie sheet with cooking spray and gently put rolls in.
10. Bake rolls in preheated oven at 375F until golden brown, about 20-30 minutes.
11. Remove from oven and cover with damp paper towels to prevent drying out. Serve hot.