Italian Sausage and Vegetable Pasta

I hate squash. I also hate zucchini. But I LOVE this meal. This is actually probably a favorite of everyone that lives here. It's easy, delicious, relatively healthy-ish and is packed with veggies. Normally I'm a sauce with a side of pasta kind of girl, the more sauce, the better. But when I make this dish we end up eating mostly veggies and sausage, a little sauce and some pasta. I usually grill the sausages, I don't really care for them prepared any other way.

4 Italian sausages, cooked
1 lb cooked pasta of your choice
1 jar pasta sauce (homemade or store bought)
1 medium squash, sliced
1 medium zucchini, sliced
1 medium onion, sliced
Olive oil (for cooking)

Sautee onion, squash and zucchini in olive oil, seasoning with salt and pepper. Layer pasta, sauce, veggies and sliced sausage in bowls and serve.

I've also made this with chunks of sauteed red and green peppers and onion. And I've also subsituted pasta sauce with a large can of diced tomatoes, warmed through and seasoned with salt, pepper, oregano and garlic.