Frozen or canned vegetables
If using meat, cut into small pieces and cook throughly.
Pour everything (except pasta) into a stock pot and bring to a boil. The soup can be kept at a low simmer until almost ready to serve Add pasta last and boil for length of time indicated on package. (The pasta will keep soaking up liquid until it becomes a soggy mess, so it needs to be added as close to serving as possible.)
Yeah, I know, it's a "duh!" recipe, but it's actually pretty healthy, quite tasty, and relatively cheap.