In a large bowl place flour and salt and mix well.
In a small bowl place the warm water (the water should be between 100-110'F)). Add the yeast and sugar, stir lightly and let it sit until frothy ( this will take about 5-10 minutes).
Add the yeast mixture to the flour and blend well until a soft dough forms.
Rub a deep bowl with olive oil and place the dough inside the oven. Cover and let it sit until double in size (between 1-2 hours).
Preheat oven to 400'F
Turn dough onto a floured surface. Punch down and knead for about 5 minutes.
Roll dough into the shape of a cylinder, and cut into 6 equal parts.
To make the filling, heat the oil in a non stick skillet and saute the onion and garlic until translucent. Add the tomatoes, and the ground lamb.
Use a spatula to break lamb into small pieces, and sprinkle in the salt, allspice and zatar.
Cook completely.
Divide the dough into 4 equal parts, and roll out each part into a 9" x 3" oval.
Place filling down the center of the oval and then brush around the edges with the egg wash.
Pinch the top and bottom of the oval to create a boat shape, and fold sides inwards.
Place individual fatayer on a baking sheet that has been sprinkled with cornmeal. Sprinkle each individual fatayer with nigella seeds.
Bake for about 15-20 minutes, or until fatayer appears golden and crispy. Garnish each fatayer with chopped parsley.