Sauteed Squash with Portobello Mushrooms (compliments of Christina)

2 Tbsps cooking oil
1/4 cup (more or less to suit tastes) onion, coarsely
chopped
1 small yellow summer squash
1 small green zucchini
1 or 2 portobello mushrooms, sliced and then cut
*optional* several dashes of Asian seasoning mix (like
Pampered Chef's)
*optional* couple dashes of soy sauce

Heat the oil over medium high heat in a stir fry or
large saute pan. Add onions and cook until tender,
but not browned. Add squash and stir fry until tender
and golden. Finally, add mushrooms and cook for just
a minute or two. Add the seasoning or just salt and
pepper and serve.