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Onions, fried in butter

Onions fried in butter are onions cooked in butter, with the nutritional values reflecting both ingredients. They mainly provide carbohydrate and fat, along with fibre. Per 100g, they contain 11g of carbohydrate, 5.3g of fat, 3.5g of saturated fat and 3g of fibre.

Carbohydrate provides energy, while fibre supports normal bowel function. Butter contributes saturated fat, which is worth noting for people monitoring their saturated fat intake. The amount of butter used in cooking can affect the fat and energy content of the finished dish, so values may vary between recipes. Full nutritional figures are provided in the tables below.

Nutrition per 100g

Nutrient

Per 100g

Energy

95 kcal

Energy

396 kJ

Fat

5.3g

of which saturates

3.5g

Carbohydrate

11g

of which sugars

8.6g

Fibre

3g

Protein

1.2g

Alcohol

0g

Water

80g

Cholesterol

26mg

Vitamins and minerals per 100g

Nutrient

Per 100g

Vitamin C

3mg

Thiamin (B1)

0.12mg

Riboflavin (B2)

0.03mg

Niacin (B3)

0.4mg

Vitamin B6

0.1mg

Vitamin B12

0µg

Folate

7µg

Calcium

41mg

Iron

0.42mg

Magnesium

11mg

Phosphorus

31mg

Potassium

189mg

Zinc

0.2mg

Copper

0.06mg

Selenium

Trace

Iodine

6µg

Other types of onions

Food

Calories per 100g

Protein per 100g

Fat per 100g

Fibre per 100g

Onions, fried in corn oil

95 kcal

1.2g

5.3g

3g

Onions, fried in lard

95 kcal

1.2g

5.3g

3g

Onions, fried in rapeseed oil

95 kcal

1.2g

5.3g

3g

Onions, fried in sunflower oil

95 kcal

1.2g

5.3g

3g

Onions, baked

43 kcal

1.2g

0.2g

2.7g

Onions, boiled in unsalted water

25 kcal

0.7g

0.3g

2.3g

Onions, dried, raw

309 kcal

8.8g

1.2g

19g

Onions, pickled, drained

24 kcal

0.9g

0.2g

1.6g

Onions, raw

35 kcal

1g

0.1g

2.2g

Onions, pickled, cocktail/silverskin, drained

15 kcal

0.6g

0.1g

–

About these figures

Values are per 100g of the food as described (Calculated from 13-592 and estimated from 13-417). "Trace" means only a very small amount was found. Nutrients that were not measured are not shown. Salt is calculated from sodium.

Further reading and references

  • Public Health England. McCance and Widdowson's The Composition of Foods Integrated Dataset 2021. GOV.UK.

Article history

The information on this page is written and peer reviewed by qualified clinicians.
  • 4 Nov 2026 | Latest version
  • 3 Nov 2026 | Originally published