Onion fondue
Onion fondue is a delicious classic of French cuisine: finely-sliced onions, cooked long and slow until they are melting and caramelized.
This can be used in many other recipes.
This can be used in many other recipes.
149 K 4/5 (44 reviews)
50 min.
Easy
500 g
5 IngredientsLast modified on: March 25th 2020
For 500 g, you will need:
1 kg 
3 tablespoons 
20 g 
2 
2 sprigs Change these quantities to make:
Change measures:
Times for this recipe
Preparation: 8 min.
Cooking: 45 min.
All in all: 50 min.
If you start now, at , you will finish around : ?.Change start time
To finish around 7pm, you'll need to have started before: .Change end time
Step by step recipe
Stage 1 - 7 min.
Stage 2 - 2 min.
Stage 3 - 1 min.
Add the sliced onions, mix well, but do not salt.
Turn the heat down to its lowest and leave to cook gently uncovered, stirring every 5 minutes or so.
Turn the heat down to its lowest and leave to cook gently uncovered, stirring every 5 minutes or so.
Stage 4 - 40 min.
Each time you stir, remember to scrape the bottom of the pan to mix in the cooking juices that the onions will create, so that gradually...
Stage 5
...they will take on the desired colour and consistency.
At about halfway, you can remove and discard the thyme and bayleaf.
At about halfway, you can remove and discard the thyme and bayleaf.
Stage 6
Once the onions have reached this colour (I like them really well caramelized), take off the heat, salt and pepper, then check the seasoning.
Stage 7
Your onion fondue is ready for use in any recipe you like.
Remarks
You will notice how the long cooking really brings out the onions' slightly sweet flavour, so do salt quite generously at the end of cooking.
It is important not to use a non-stick pan, as a conventional metal pan helps the onions to stick and create the cooking juices. These should be scraped off the bottom frequently and mixed in.
You can use clarified butter instead of the mix of oil + butter, or just normal butter, but take care not to let it burn.
It is important not to use a non-stick pan, as a conventional metal pan helps the onions to stick and create the cooking juices. These should be scraped off the bottom frequently and mixed in.
You can use clarified butter instead of the mix of oil + butter, or just normal butter, but take care not to let it burn.
Keeping: Several days in the fridge, covered with plastic film.
Source: Home made.
Nutritional information
| Proteins (gr) | Carbohydrates (gr) | Fats (gr) | Energy value (in k-calories) | Energy value (in k-joules) | |
|---|---|---|---|---|---|
| Whole recipe | 10 RDI=5 % | 90 RDI=8 % | 60 RDI=9 % | 970 RDI=50 % | 4,050 RDI: 50 % |
| Per 100 g | 1 RDI=0 % | 8 RDI=1 % | 5 RDI=1 % | 90 RDI=5 % | 380 RDI: 5 % |
How much will it cost?
- For 500 g : 3.00 €
Change currency: 
Note: Be careful, these prices are only an estimate, you can consult the table of prices by ingredients used for this estimate.
Some other recipes using this recipeSee them all 8
Boulangère potatoes
This great classic of French home cooking consists of sliced potatoes with slivers of bacon between, on a bed of onion fondue, moistened with poultry (or beef) stock and baked in the oven. It takes a fairly long time, but is so good, and reheats very well.
45 K 2 1 hour 40 min.
Montlebon toast
Not just plain old cheese on toast, these slices are loaded with delicious toppings: bechamel sauce, caramelized onions and sticks of morteau sausage. The slices are finished with grated Comté, then browned in the oven.
49 K5 30 min.
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.
61 K3.9 1 hour 3 min.
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.
66 K4.1 60 min.
Baked Camembert
In this recipe, very similar to the hot box, a Camembert cheese is baked in the oven, surrounded by baked potatoes set on a fondue of onions. A delicious and comforting winter dish.
8,5441 1 hour 25 min.
This recipe uses (among others)
Onion
Like these other recipes: Shakshuka, Enchiladas, Summer Salmon Blanquette, Creamy risotto with diced vegetables and flax seeds, Spaghetti with mussels and basil, ... See them all 147
Butter
Like these other recipes: Breton Sandwich, Elsa's Comtoise galette, Shiitake eggs, Couscous, Breton style shellfish and vegetable soup, ... See them all 472
Oil
Like these other recipes: "Haute patate" green beans, Larded pork tenderloin, "Au vert" beef, Crab Cakes, Spinach and cashew brik rolls, ... See them all 93
Thyme
Like these other recipes: Spaghetti with tomatoes and pesto, Prawn salad with a crunch, Paté en croute (terrine in a pie crust), Pork chops in the oven, Spinach and chick peas "à la milanaise", ... See them all 67
Other recipes you may also like
Soft fruits in sabayon
This recipe is made by briefly cooking an assortment of soft fruits (raspberries, blackcurrants, blackberries, blueberries, currants...) with a little sugar to glaze them. They are served in a small dish, covered with a delicious sabayon which can be lightly "burned" on surface.February 21th 2011270 K3.9 50 min.
How to succeed in making sabayon (syllabub)
A sabayon is a delicious and delicate preparation based on egg yolks and sugar, with a liquid added (wine, alcohol, fruit juice, etc), which is then whipped in a bain-marie until it is both light and smooth. Usually sabayon is sweet (syllabub), but you can make it savoury, in which case there is...November 12th 2017941 K 54 20 min.
Fruit coulis (fruit purée)
Contrary to what people usually think, coulis is not just a simple fruit purée with sugar. Of course, this is the general principle, but it's possible to make something much better and more refined. This recipe is for a strawberry coulis (see below for other fruits): how to make it, but also how...October 20th 2012782 K 43 25 min.
Natural leaven
Leaven is a natural raising agent, a fermented mixture of water, flour and the microscopic yeasts which are present in the air. It's a delicate living substance, sensitive to the external environment. The recipe is around 4000 years old and dates back to the Egypt of the Pharaohs, via a beautiful...April 3rd 20201.71 M 304.0 7 days 15 min.
How to prepare spinach
For most people (and me most of all), spinach brings back bad memories of canteens... But, well prepared, it's a fine and delicate vegetable which goes remarkably well with scrambled eggs, fish, and many another things. Here are two ways of preparing it.June 5th 20153.39 M3.5 1 hour 9 min.
News list of cooking-ez.com
Sign up to receive the latest recipes (next batch due to be sent on 2025-07-13)
Note: We'll never share your e-mail address with anyone else.
Post a comment or question
Follow this recipe
If you are interested in this recipe, you can "follow" it, by entering your email address here. You will then receive a notification immediately each time the recipe is modified or a new comment is added. Please note that you will need to confirm this following.
Note: We'll never share your e-mail address with anyone else.
Alternatively: you can subscribe to the mailing list of cooling-ez.com , you will receive a e-mail for each new recipe published on the site.