Spaghetti squash is a winter squash with a unique stringy flesh that resembles spaghetti noodles. This recipe is a low carb side dish featuring classic italian flavors but without the pasta Spaghetti squash is also a lower potassium winter squash, making it a great addition to a kidney-friendly diet. Chef's tip: microwaving the raw spaghetti squash before cutting in half makes it much easier to cut into.