Spaghetti squash. It contains many nutrients, including folic acid, potassium, vitamin A, and beta carotene. It is low in calories, averaging 42 calories per 1-cup (155 grams) serving. Cooking spaghetti squash: cut in half and take seeds out, set seeds aside to roast for a healthy snack later. Put spaghetti squash cut side down in a steamerand cook till soft (or cut side up in a 350° oven for 30mins to an hour). Let it cool slightly before handling. Scrape the meat with a fork to prepare for the recipe or dish that you will be making