Caramelized Onions

Caramelized Onions
Caramelized onions are sliced thinly then cooked for a long time until completely brown.

They can be used in lots of recipes. For example, they can transform a simple omelette into a divine treat.
36,5083.3/5 for 7 ratings
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Last modified on: September 23th 2015

For 150 g, you will need:

Change those ingredients for: 50 g 75 g 150 g 300 g 450 g

How long does it take?

Time required for this recipe:
PreparationCookingStart to finish
9 min.20 min.29 min.
Keeping: Several days in the fridge, in a closed box.
At what time?
  • When will I finish if I start the recipe at a certain time?
    When should I start for the recipe to be ready at a certain time?
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Step by step recipe

Stage 1 - 3 min.
Caramelized Onions : Photo of step #1
Peel then rinse 500 g onion and cut in half lengthways.

Stage 2 - 5 min.
Caramelized Onions : Photo of step #2
Slice the onions thinly. If you have one, a mandolin will make this job a lot quicker.

This seems like a lot of onions to begin with, but they will reduce by 2/3 when cooked.

Stage 3 - 1 min.
Caramelized Onions : Photo of step #3
Pour 3 tablespoons oil into a large pan on medium heat.

When hot, add the onions and mix well.

Stage 4 - 20 min.
Caramelized Onions : Photo of step #4
Leave to cook gently until caramelized, stirring from time to time.

Stage 5
Caramelized Onions : Photo of step #5
The onions will gradually brown.

Stage 6
Caramelized Onions : Photo of step #6
Stop when they are browned to your liking.

Salt and pepper to taste...


Once cooked, the onions will need quite a generous amount of salt as the process tends to make them rather sweet.

You can balance this sweetness, which can be a bit excessive at times, by pouring half a glass of dry white wine or 3 tablespoonsful of vinegar into the pan 5 minutes before the end of cooking.

Nutritional information

Whole recipe
Energetic valueProteins CarbohydratesFats
610 Kcal or 2,554 Kj7 gr45 gr45 gr
31 %3 %4 %7 %
Per 100 g
Energetic valueProteins CarbohydratesFats
112 Kcal or 469 Kj1 gr8 gr8 gr
6 %<1 %1 %1 %
% are calculated relative to a Recommended Dietary Intake or RDI of 2000 k-calories or 8400 k-joules by day for a woman (change to a man).

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Some recipes that use this recipe

Eggs in tomato shells
Eggs in tomato shells

This is a novel way of cooking eggs: in tomato "shells" or egg-cups! For extra flavour, we'll put a spoonful of caramelized onions in the tomato first.
25,7273.9/5 for 12 ratings 1 hour 3 min.
Loaf for "les filles'"
Loaf for "les filles'"

This loaf for "the girls" in three colours is made by putting together three doughs, each with a different flavour: tomato for the red, pesto with olives for the green and onion for the white. The three different doughs fuse as they rise together in the tin before cooking, to produce an unusual...
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Stuffed Mushrooms
Stuffed Mushrooms

In this recipe, the mushrooms are stuffed with caramelized onions, topped with cheese and cooked in the oven. As mushrooms tend to give off a lot of liquid, especially when very fresh, the cooking is done in two stages.
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See all recipes that use it


Home made.

More recipes?

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