In a medium saucepan, cook orzo in boiling water, following package directions.
In a large skillet, add the sausage and cook until both sides are browned.
Add the summer squash and 1 cup of Italian dressing and stir.
Add salt and pepper to taste.
Cover with lid and set to simmer for about 10 minutes or so, stirring once or twice.
When squash is soft and has a sauteed texture, add the drained orzo and a bit more dressing, if needed, to ensure sausage, squash, and pasta is all coated.
Cover and cook for five minutes longer.
Serve with bread or a side salad.