In a 3 quart saucepan bring water to boiling.
Reduce heat slightly.
Cook in gently boiling water about 10 minutes or till tender.
In a mixing bowl combine egg, 1/2 cup feta cheese, and milk.
Add drained pasta, tossing gently.
Spread pasta mixture evenly in an 8x8x2 inch baking dish.
In a large skillet cook ground lamb or pork and onion till meat is brown.
Drain off fat.
Stir in the tomato sauce and ground cinnamon and heat through.
Spread meat mixture over pasta mixture in baking dish.
Sprinkle with 1/2 cup cheese.
Bake in a 375Â° oven for 8 to 10 minutes or till heated through.