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Sliced button mushrooms with rounded cream-colored caps and pale stems are mixed with soft, translucent golden onion strips on a plate.
●Low GI

Button mushrooms with onion Calories

Low-calorie mushroom and onion dish providing fiber, selenium, and B vitamins

CALORIES · 100 G

34kcal

GI

15low

POTASSIUM · 100 G

290mg

FIBER · 100 G

1.8g

Quick answer

1 serving (medium) of Button mushrooms with onion (120 g) has 41 calories. That works out to 34 calories per 100 g. It contains 6.1 g of carbs, 3.1 g of protein, 0.6 g of fat and 2.2 g of fiber. Its 1.8 mg of B5 covers 36% of the Daily Value. Its glycemic index is 15 (low), so it raises blood sugar slowly.

Button mushrooms with onion Nutrition Facts

Selected: 1 serving (medium) · 120 g

41

KCAL / 120G

Carbs

6.1g

· 2% DV

Protein

3.1g

· 6% DV

Fat

0.6g

· 1% DV

Fiber

2.2g

· 8% DV

DV is the share of the daily value covered, on a 2,000 kcal reference diet.

Calories come from: Carbs 58% · Protein 29% · Fat 13%

Button mushrooms with onion nutrition facts table · 1 serving (medium) (120 g)

NutrientAmount% DV
Calories41 kcal
Total fat0.6 g1%
Saturated fat0.1 g1%
Trans fat0 g
Sodium9.6 mg0%
Total carbohydrate6.1 g2%
Fiber2.2 g8%
Protein3.1 g6%

Calories: Calories measure energy. Average daily need is 2,000 kcal. Excess calories are stored as fat, too few cause weight loss.

Carbs: Your body's primary energy source. The brain runs exclusively on carbs. Daily need: 275g.

Protein: Essential for muscle repair and cell growth. Daily need: 50g. Keeps you full and boosts metabolism.

Fat: Needed for hormone production and vitamin absorption. Daily need: 78g. Limit saturated fats, choose unsaturated.

Fiber: Critical for digestive health and satiety. Daily need: 28g. Stabilizes blood sugar, lowers cholesterol.

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How Many Calories in 1 Serving of Button mushrooms with onion?

ServingAmountCalories
1 serving (medium)120 g41 kcal
1 tablespoon (small)18 g6 kcal
3 tablespoon (medium)54 g18 kcal
1 cup (diced)90 g31 kcal
100 g100 g34 kcal
1 serving (large)180 g61 kcal
1 piece (whole)220 g75 kcal
1 pack (small)250 g85 kcal

Calculated from 34 calories per 100 g.

Frequently Asked Questions About Button mushrooms with onion

How do you make button mushrooms with onion?

To make button mushrooms with onion, soften sliced onion in a pan, add sliced mushrooms, and cook over fairly high heat. Avoid crowding the pan so the mushrooms brown instead of releasing too much liquid.

What ingredients go well in button mushrooms with onion?

Button mushrooms with onion work well with olive oil or butter, black pepper, garlic, and herbs such as thyme or parsley. Add delicate herbs near the end so their flavor stays fresh.

How do you stop button mushrooms with onion from getting watery?

Button mushrooms with onion can turn watery when the pan is crowded or the heat is too low. Pat the mushrooms dry, cook them in a roomy pan, and add salt toward the end.

Should you cook the onions or mushrooms first for button mushrooms with onion?

Cook the onions first if you want them soft and sweet; add the mushrooms once the onions begin to soften. You can cook them together, but the mushrooms may release liquid before the onion is tender.

Do you need to wash button mushrooms for button mushrooms with onion?

No, button mushrooms do not need soaking before making button mushrooms with onion. Wipe off dirt with a damp cloth or briefly rinse them, then dry them well so excess water does not collect in the pan.

Can button mushrooms with onion be served as a pasta topping?

Yes, button mushrooms with onion make a simple pasta topping. Toss them with cooked pasta and a little cooking water, or add herbs and grated cheese for a richer finish.

Can you make button mushrooms with onion without oil?

Yes, you can make button mushrooms with onion without oil by cooking them in a nonstick pan with a small splash of water. Let the mushrooms release their own moisture, then cook until the excess liquid evaporates.

How long do cooked button mushrooms with onion last in the fridge?

Cooked button mushrooms with onion keep for about 3–4 days in a covered container in the refrigerator. Chill them promptly after cooking, and reheat only the portion you plan to eat.

Can button mushrooms with onion be frozen?

Yes, button mushrooms with onion can be frozen, though thawing makes the mushrooms softer and may release liquid. Cool the dish first, freeze it in a sealed container, and reheat it thoroughly after thawing.

Are button mushrooms with onion a good everyday side dish?

Yes, button mushrooms with onion can be a useful everyday side dish because it pairs easily with grains, pasta, or a main course. Keep added salt and cooking fat moderate, especially if serving it often.

Button mushrooms with onion Vitamins & Minerals

Vitamins

B5

1.8mg · 36% DV

Biotin

9.6µg · 32% DV

B3

4.92mg · 31% DV

B2

0.38mg · 29% DV

Minerals

Copper

0.29mg · 32% DV

Selenium

10µg · 18% DV

Phosphorus

98mg · 14% DV

Potassium ⭐

348mg · 10% DV

Sodium

9.6mg · 0% DV

Button mushrooms with onion Glycemic Index

GLYCEMIC INDEX

15
Low
0 Low5570100

GLYCEMIC LOAD

1.2
Low

Accounts for portion size — a more realistic measure than GI alone.

How to Burn Off Button mushrooms with onion

To burn the 41 calories in 1 serving (medium) (120 g):

🚶

10min

Walking (5 km/h)

🏃

4min

Running (8 km/h)

🚴

6min

Cycling

🏊

5min

Swimming

Times are calculated with the MET equation for a 70 kg adult. Actual burn varies with your weight, age and pace.

What is Button mushrooms with onion?

Button mushrooms with onion is a simple dish of sliced cultivated mushrooms cooked with onion, usually in a pan with a little oil and seasoning. It is a familiar home-cooking combination in many places rather than a dish tied to one specific region, and cooks may add herbs, garlic or spices to suit the meal.

The mushrooms turn tender and savoury, while softened onion brings a mild sweetness. Serve it as a side with eggs, grains or roasted vegetables, or spoon it onto toast for a light lunch. The mushrooms’ soft texture also works well folded into an omelette. It is a low-calorie choice, with 34 calories per 100 g, and supplies some fibre; use only a little oil if you want to keep the dish especially light.

How Nutritious Is Button mushrooms with onion?

Nutrient density

High

72/ 100

How many vitamins, minerals and how much fiber this food carries per calorie. A high score means a lot of nutrition for few calories.

Satiety score

Medium

50/ 100

An EatBetter score computed from fiber, protein and calorie density. A high score means staying full longer on the same calories.

Both scores are calculated per 100 g and do not change with the selected portion. The satiety score is EatBetter's own calculation, not a clinical measure.

Is Button mushrooms with onion Processed?

NOVA 2

Minimally Processed

1. Unprocessed

2. Minimally Processed

3. Processed

4. Ultra-Processed

NOVA classifies foods into 4 groups by industrial processing. NOVA 1 (unprocessed) is the healthiest.

Does Button mushrooms with onion Contain Allergens?

No known major allergens

Gluten free
Dairy free
Eggs free
Peanuts free
Tree nuts free
Fish free
Soy free
Sesame free

Which Diets Is Button mushrooms with onion Good For?

Vegan

✓ Suitable

Vegetarian

✓ Suitable

Gluten-Free

✓ Suitable

Dairy-Free

— Not suitable

Mediterranean

✓ Suitable

Paleo

✓ Suitable

Whole30

— Not suitable

DASH

— Not suitable

Keto

— Not suitable

Low FODMAP

— Not suitable

Button mushrooms with onion Fat Profile

SATURATED

0.1g

MONOUNSATURATED

0.02g

POLYUNSATURATED

0.2g

⚖️

Omega 6:3 ratio 19:1

Above the ideal 4:1 (19:1).

Compare Button mushrooms with onion

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🥄

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44 kcal

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20 kcal

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Oven-Roasted Mixed Vegetables

65 kcal

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Nutrition data compiled from USDA FoodData Central and scientific sources.