"Saute" red onion in a pan that has been lightly sprayed with Pam and wiped and to which a tablespoon or two of water has been added, until soft. Add squash and saute for about five minutes, turning every so often. Add tomato and basil - cover and cook for another five minutes, or so, until everything has blended nicely together.
I've been making this dish for years . . . it's easy and yummy . . . good hot or cold. I try to make it with both yellow squash and zucchini - but I generally use whatever I have on hand. This makes generous servings for two ~- served over rice as a main meal. Or, I use it as an side dish for dinner and for lunch the next day.
