Onion tart: calories and nutrition facts

Onion tart has 280 kcal per 100 g. One serving, 1 Slice (150 g), has 420 kcal.

Calories: 280 kcal
Protein: 7 g
Carbohydrates: 23.5 g
Fat: 17.2 g

Per 100 g

Onion tart: how many calories?

Onion tart has 280 kcal per 100 g, with 7 g protein, 23.5 g carbs and 17.2 g fat. A 150 g serving (1 Slice) has 420 kcal. That is more than the average for Starters & Mains (171 kcal per 100 g). Most of its calories come from fat.

Where the calories come from

Protein10%
Carbohydrates34%
Fat56%

Calculate a portion

Amountg

Calories: 420 kcal
Protein: 10.5 g
Carbohydrates: 35.3 g
Fat: 25.8 g

Nutrition facts

Nutrient	Per 100 g	Per serving (150 g)
Calories	280 kcal	420 kcal
Fat	17.2 g	25.8 g
of which saturated fat	7.5 g	11.3 g
Carbohydrates	23.5 g	35.3 g
of which sugars	5.6 g	8.4 g
Fiber	1.9 g	2.8 g
Protein	7 g	10.5 g
Sodium	367 mg	551 mg
Water	0 g	0 g
Vitamin C	0 mg	0 mg
Calcium	0 mg	0 mg
Iron	0 mg	0 mg
Potassium	0 mg	0 mg
Magnesium	0 mg	0 mg

Source: Ciqual food composition table (ANSES, France). Data updated on 2 September 2026.

Share of reference intakes

Per 100 g, compared with an adult's reference intakes (2,000 kcal a day, Regulation (EU) No 1169/2011).

Nutrient	Of reference intake
Calories(280 kcal)	14%
Fat(17.2 g)	25%
of which saturated fat(7.5 g)	38%
Carbohydrates(23.5 g)	9%
of which sugars(5.6 g)	6%
Protein(7 g)	14%
Salt(0.92 g)	15%

What the EU thresholds say

Nutrition claim thresholds from Regulation (EC) No 1924/2006, per 100 g.

This food meets none of these thresholds.

Onion tart: frequently asked questions

Onion tart: how many calories per serving?

A 150 g serving (1 Slice) has 420 kcal.

Onion tart: how much protein?

Onion tart contains 7 g of protein per 100 g, 14% of the 50 g reference intake.

Onion tart: how much fibre?

Onion tart provides 1.9 g of fibre per 100 g, 8% of the 25 g a day recommended by EFSA.

Onion tart: how much makes 100 kcal?

100 kcal is about 36 g of this food.

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