Preheat oven to 350 F.
Combine all filling ingredients in a bowl and set aside
In a small bowl, beat egg yolks with 1 Tbs. of water. Set aside. You will use this to brush the pogacas before baking.
Place all dough ingredients in a wide and deep bowl, Mix thoroughly and knead with your hands until the dough is elastic, non sticky and smooth, Take a piece of dough that is approximately the size of an egg and flatten on the palm of your hand.
Place a teaspoon of filling in the center of dough and close up like a half-moon.Make sure the edges are tightly pinched so no filling escapes during the baking process.
Place the pogacas on a piece of parchment paper on a cookie sheet (about 12 per sheet)
Brush with egg wash.
Sprinkle with nigella seeds and bake for about 25 minutes, or until golden brown. Yield: about 25-28 pogacas.