Like most mushrooms, white mushrooms are low in calories but pack plenty of nutrients. One cup (96 grams) of whole white mushrooms provides (5Trusted Source): Calories: 21 Carbs: 3 grams Fiber: 1 gram Protein: 3 grams Fat: 0 grams Vitamin D: 33% of the Daily Value (DV) Selenium: 16% of the DV Phosphorus: 12% of the DV Folate: 4% of the DV
