Description Spaghetti squash is a vibrant winter vegetable enjoyed for its nutty flavor and impressive nutrient profile. Closely related to pumpkin, squash, and zucchini, spaghetti squash comes in many different sizes, shapes, and colors, ranging from off-white to dark orange. It’s not only low in calories and loaded with nutrients but also associated with a number of health benefits. Packed With Vitamins and Minerals Spaghetti squash is a nutrient-dense food, meaning it’s low in calories but high in several key vitamins and minerals. In particular, spaghetti squash is a good source of fiber, vitamin C, manganese, and vitamin B6. One cup (155 grams) of cooked spaghetti squash provides the following nutrients.