
Portobello mushrooms are a tasty, low-calorie alternative to meat. Grilled portobello mushrooms contain approximately 18 calories per 3-ounce serving (roughly one mushroom), according to the USDA. This equates to only 1% of a typical 2,000-calorie daily diet for an adult. Portobello mushrooms are also low in fat and provide a good source of plant-based protein, making them an attractive option for vegetarians and vegans.
| Characteristics | Values |
|---|---|
| Calories in grilled portabella mushroom | 18 calories per 3-ounce serving (USDA) or 32 calories per 121 grams |
| Calories in raw portabella mushroom | 19 calories |
| Daily Value (DV) | 2,000 calories a day is used for general nutrition advice |
| Calories saved by choosing grilled portabella mushroom over hamburger | More than 150 calories |
| Carbohydrates | Less than 4 grams |
| Fat | Less than 0.5 grams |
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What You'll Learn

Portabella mushrooms have low calories
Portabella mushrooms are a great option for those looking to cut down on calories without compromising on taste and nutrition. Grilled portabella mushrooms are a healthy alternative to high-calorie foods like hamburgers, offering a satisfying and nutritious option with significantly fewer calories.
According to sources, grilled portabella mushrooms have approximately 35 calories, with one source stating 28 calories per 100 grams. This is considered a low-calorie density food, allowing you to consume larger quantities while maintaining a calorie-conscious diet. In comparison to other foods, the calorie content is minimal. For example, a serving of two portobello mushrooms (approximately 3 ounces or 85 grams) provides only 18 calories, which is just 1% of a typical 2,000-calorie daily diet.
The low-calorie nature of portabella mushrooms makes them an attractive option for weight management. They are also low in fat, with less than half a gram of fat per mushroom, and they contain no saturated fat, trans fats, or cholesterol. This makes them a healthier alternative to other foods that may be higher in unhealthy fats and calories.
Additionally, portabella mushrooms offer a good source of plant-based protein, with over 2 grams of protein per mushroom. They are also a good choice for those on a keto diet due to their high fibre and low sugar content. The high fibre content contributes to a feeling of fullness and satisfaction, making it easier to manage calorie intake.
In summary, portabella mushrooms are a nutritious and satisfying food option with a low-calorie profile. They can be grilled and enjoyed in larger quantities compared to higher-calorie alternatives, making them a tasty and healthy addition to any diet.
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They are high in protein
Grilled portabella mushrooms are a great option for those seeking a low-calorie food option that is also high in protein. While the exact number of calories in a grilled portabella mushroom can vary depending on its size and preparation, it is generally agreed that they are a low-calorie food option. According to one source, there are 18 calories in portabella mushrooms per 3-ounce serving (approximately one mushroom). This amount constitutes only 1% of a typical 2000-calorie daily diet for the average adult. Another source calculates the calories in a grilled portabella mushroom to be 32 calories per 121 grams, or 28 calories per 100 grams, which is still considered low.
What makes grilled portabella mushrooms especially appealing is their high protein content. Each mushroom contains more than 2 grams of plant-based protein. This makes them an ideal food option for vegetarians or vegans who need to incorporate more protein into their diets. In addition, portabella mushrooms are a good source of other essential nutrients, including copper, selenium, vitamin B6, and niacin.
The recommended daily allowance (RDA) for vitamin B6 is met by 7% when consuming one cup of diced portabella mushrooms, which provides 0.13 milligrams of this vitamin. The same portion also supplies 3.87 milligrams of niacin, meeting 24 to 27% of your RDA. Portabella mushrooms are also an excellent source of copper, providing 0.2 milligrams or 27% of your RDA in one cup of diced mushrooms. This mineral is crucial for the formation of connective tissue, iron metabolism, and energy and antioxidant production in the body.
Selenium is another essential mineral found in significant amounts in portabella mushrooms. One cup of diced portabellas provides 16 micrograms or 29% of your RDA for selenium. Selenium plays a vital role in producing thyroid hormones and antioxidants, as well as supporting the immune system and regulating inflammation in the body. The high protein and nutrient content of grilled portabella mushrooms make them a nutritious and satisfying option for those seeking a low-calorie alternative to meat or other high-calorie foods.
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They are low in fat
Grilled portabella mushrooms are a tasty treat, and they are also a healthy option. They are low in fat, which is great news if you're watching your weight or trying to maintain a healthy lifestyle.
A serving of grilled portabellas is generally considered to be two mushrooms, and each mushroom contains very few calories. According to the USDA, there are only 18 calories in a 3-ounce serving of portabella mushrooms, which is just 1% of a typical 2,000-calorie daily diet for an adult. That's a tiny proportion, leaving plenty of room for other foods in your daily calorie allowance.
Compared to other foods, the calorie difference is even more apparent. For example, a small hamburger patty contains the same number of calories as eight large portobello mushrooms, which is quite a substantial meal! Similarly, 3 ounces of cooked ground beef contains 218 calories, which is over 11 times the number of calories in the same weight of grilled portabellas.
So, if you're looking for a satisfying, tasty, and healthy option for your next meal, grilled portabella mushrooms are a great choice. You can enjoy them in larger quantities without worrying about consuming too many calories or too much fat. They are a perfect example of a low-calorie food, as defined by the CDC, and can help with weight management as part of a balanced diet.
Not only are they low in fat, but grilled portabella mushrooms also offer other nutritional benefits. They are a good source of plant-based protein, with more than 2 grams per mushroom, and they are high in fibre, with 2 grams of net carbohydrates per 100 grams of mushrooms. This makes them an excellent choice for anyone following a keto or ketosis diet.
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They are a good source of copper and selenium
Grilled portabella mushrooms are a nutritious food choice with several health benefits. While the calorie count per grilled portabella mushroom varies, it is generally agreed that they are a low-calorie food option. According to the USDA, there are 18 calories in portabella mushrooms per 3-ounce serving, which is about one mushroom. This equates to only 1% of a typical 2,000-calorie daily diet for an average adult. Other sources suggest that grilled portabella mushrooms contain 28 calories per 100 grams or 32 calories per 121 grams.
Portabella mushrooms are an excellent source of copper and selenium, both of which play vital roles in maintaining a healthy body. Copper is essential for forming connective tissue, metabolizing iron, and producing energy and antioxidants. According to the NIH, a cup of diced portobellos provides 0.2 milligrams, covering 27% of your recommended daily allowance (RDA) for copper.
Selenium, another essential mineral, has two key functions in the body. Firstly, it aids in the production of thyroid hormones and antioxidants. Secondly, it supports the immune system and helps regulate inflammation. A cup of diced portabella mushrooms provides 16 micrograms of selenium, which meets 29% of your RDA for this important nutrient.
By including grilled portabella mushrooms in your diet, you can benefit from their high nutrient content. They are an excellent alternative to high-calorie foods and can help you feel satisfied while managing your weight. The low-calorie, high-nutrient profile of portabella mushrooms makes them a healthy and nutritious addition to any meal.
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They are a healthier alternative to hamburgers
Grilled portabella mushrooms are a healthier alternative to hamburgers. They are low in calories, with only 18 calories per 3-ounce serving (approximately one mushroom) according to the USDA, or 35 calories per 100 grams, making them a low-calorie food. In comparison, a hamburger patty contains over 200 calories. This means you could eat eight large portobello mushrooms for the same number of calories as one small hamburger patty.
Portobello mushrooms are also low in fat, with less than half a gram of fat per mushroom, and they contain no saturated fat, trans fats, or cholesterol. They are a good source of dietary fibre, vitamins, and minerals, including vitamin D, B vitamins, copper, selenium, potassium, and phosphorus. They also contain plant-based protein, with over 2 grams per mushroom, and are high in fibre.
Portobello mushrooms can be used as a meat alternative for vegetarians and vegans, and they are often used in vegan burgers. They have a meaty texture and can be marinated and grilled to create a flavoursome and healthy burger. They can also be used as a healthier alternative to bread buns for hamburgers, saving on carbs and calories.
When choosing portobello mushrooms, look for those that are firm, dry, and uniform in colour, without any spots or blemishes. They should be stored in the refrigerator and used within 3 to 7 days. When grilling, marinate the mushrooms first, and then cook them for 3 to 5 minutes on each side, or 10 minutes per side depending on the heat of your grill.
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Frequently asked questions
There are approximately 18 calories in a grilled portabella mushroom, according to the USDA.
Grilled portabella mushrooms are considered low-calorie, with a high ratio of calories to weight. For context, you could eat eight large portobello mushrooms (almost 2 pounds) for the same number of calories as one small hamburger patty.
A serving size is generally considered to be two portobello mushrooms, or about 3 ounces, which equates to 36 calories.
Yes, grilled portabella mushrooms are a good choice for dieting as they are low in calories and high in fibre, which helps you feel satisfied and full.
























