Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   1      small         onion -- thinly sliced
   2      tbsp          cooking oil
   2      medium        zucchini -- sliced
   2      medium        yellow squash -- sliced
   3      medium        tomatoes -- diced
   8      ozs           mozzarella cheese -- grated

Preparation:

Saute onion with oil in large skillet or wok. Cook until clear. Add=20 zucchini and yellow squash and cook until just tender. Add tomatoes and=20 cheese and cook until cheese has just melted. Serve immediately.