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Mornay Sauce

Name: Mornay Sauce
Prep time: 6 min
Cook time: 9 min
Total time: 15 min
Yield: 4 people
Cuisine: French
Ingredients: 500 g bechamel sauce; 30 g egg yolk; 50 g Comté cheese

Mornay sauce is made from béchamel sauce, to which egg yolk and grated cheese are added.

39 K 5/5 (39 reviews)434411

Duration

15 min.

Difficulty

Easy

Last modified on: November 5^th 2026

Step by step recipe Ingredients Duration Nutritional facts Cost Comments Support the site ❤️

For 4 people, you will need:

1 500 g bechamel sauce
2 30 g egg yolk
3 50 g Comté cheese
Total weight: 580 grams

Times for this recipe

Preparation

6 min.

Cooking

9 min.

All in all

15 min.

Step by step recipe

Step 1 - ⌛ 5 min.

Prepare 500 g bechamel sauce, or reheat it if you made it in advance.

Step 2 - ⌛ 1 min.

Add 30 g egg yolk...

Step 3 - ⌛ 4 min.

...and bring back to the boil, whisking constantly.

Step 4 - ⌛ 1 min.

Add 50 g Comté cheese...

Step 5 - ⌛ 4 min.

...and carefully whisk in.

Turn off the heat and your Mornay sauce is ready.

Note: If you need a very smooth sauce, you can give it a quick blast with a blender, or strain it through a sieve.

Step 6

If you're not going to use it straight away, wrap it in plastic wrap, as, like béchamel sauce, it crust quickly.

Remarks

The cheese used is usually a hard one: Comté, Gruyère, Emmental, Cheddar, Parmesan, etc., but you can also use other cheeses to suit your taste, such as Roquefort, Mont d'or or Gorgonzola.

Curiously enough, in his book "Ma cuisine", Auguste Escoffier uses Parmesan and no egg yolks for his version of Mornay.

The name comes from a 19^thcentury epicurean named Philippe de Mornay.

Keeping: 1 or 2 days in the fridge, protected by cling film.

Source: Homemade.

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Nutritional information

	Proteins	Carbohydrates	Fats	Calories	Energy
Per 100 g	8 g RDI=12 %	8 g RDI=3 %	16 g RDI=22 %	207 kcal RDI=10 %	865 kJ RDI=10 %
Per person	11 g RDI=17 %	11 g RDI=4 %	24 g RDI=32 %	300 kcal RDI=15 %	1,254 kJ RDI=15 %
Whole recipe	45 g RDI=69 %	46 g RDI=17 %	94 g RDI=129 %	1,198 kcal RDI=60 %	5,016 kJ RDI=60 %