Recipe - Meat And Cheese Filling

2 small Onions finely chopped
2 One half tablespoon Oil
1 pound Ground beef/lamb
Salt and pepper
2 Tomatoes skinned and chopped
One fourth pound Swiss/hard cheddar grated

Saute the onions in oil until soft and a pale golden color. Add the meat
and fry, squashing well with a fork, until it changes color. Season to
taste with salt and pepper, add the tomatoes and moisten with a few
tablespoon of water. Cook until the tomatoes are reduced to a puree. Stir
in grated cheese and remove from the heat.