Finely chop the onions and add to the minced ( ground ) beef. Add tomato paste, spices and seasonings. Mix well, then spread on an oven pan or baking dish, to form a layer 1.5 to 2 inches thick. Cut into 4" square sections and release sides. Peel tomatoes, slice and place on meet. Bake in center of preheated 350F oven for 30 minutes or until done.