Summer Squash with croutons

6 -7 cups zucchini (shredded or chopped) or 6 -7 cups yellow squash (shredded or chopped) 1 small onion , minced 10 1/2 ounces condensed cream soup 1 cup[...]

coarse salt 1 lb spaghetti or 1 lb linguine 1/2 lb Italian sausage , link, sliced very thin 1/4 cup olive oil , plus more for drizzling 2 medium summer[...]