Mornay Sauce Recipe

February 2, 2017 8 Comments

How to Make a Easy Mornay Sauce at Home

I think of a Mornay sauce as the older cousin of Bechamel sauce which is confusing because Mornay is basically Bechamel with cheese added to it.

This would make you think Bechamel must have come before Mornay but most people suspect Bechamel was created around the 1650’s while they believe Mornay sauce was named after Philippe, duc de Mornay who lived from 1549 to 1623.

A mystery nonetheless.

What Cheese To Use

From everything I’ve found on the Internet, it seems the cheese used back in the day was Gruyère, a hard cheese from Switzerland name after the city. There are French styled Gruyère cheeses such as Comté and Beaufort that would work just as well as other hard cheeses.

Emmentaler, a medium hard cheese from Switzerland, is also often used in the making of Mornay sauce or it’s sometimes combined 50/50 with Gruyère. I have also seen recipes for this sauce using Parmesan or cheddar especially when making macaroni & cheese.

What to Serve Mornay Sauce With

Just like Bechamel sauce, Mornay can be served on most foods you want to add an extra layer of flavor.  Typically you see it served with eggs, chicken, fish, vegetables and shellfish but you also can use it when making your favorite casseroles.

Restaurants use it to turn a simple steamed vegetable like broccoli or cauliflower into something “gourmet”.  Speaking of gourmet, how about macaroni & cheese. As easy as this sauce is to prepare, you can make the most amazing mac & cheese at home, even better than the stuff in the box.

That’s right, even better than the brand we all grew up with and served our children. Not that there is anything wrong with mac & cheese from a box, but making it from scratch with Mornay sauce is exceptional.

Cooking Tip

Stay on top of this while you are preparing it especially in the initial steps of making the roux. If you don’t pay attention to it, you can burn the butter and/or flour in just seconds. It’s a quick sauce to make, so stay focused.

Mornay Sauce Recipe

Prep Time: 5 minutes

Cook Time: 10 minutes

Yield: 2 cups

Mornay Sauce Recipe


3 tablespoons butter

3 tablespoons all purpose flour

1 1/2 cups milk

pinch of ground nutmeg

salt and pepper

2 ounces (1/2 cup) grated hard cheese (Gruyère, Swiss, Cheddar, Parmesan)

How To Prepare At Home

Heat a medium sized saucepan over medium-high heat and when hot, add the butter. When the butter melts, add the flour and start whisking.

You want to be careful not to let the butter burn or the flour to turn brown. It's only going to take a minute to a minute and a half for the roux to start turning a pale yellow.

Slowly add the milk in a stream while constantly whisking and whisking some more. Bring the sauce to a boil and immediately lower the heat to a simmer and continue cooking for 3 to 4 minutes, being careful not to let the sauce burn by whisking frequently.

Remove the pan from the heat and add the nutmeg, season with salt & pepper and stir. You now have a bechamel sauce.

Still off heat, add the grated cheese and whisk until all the cheese melts into the sauce. It should be thick and smooth.

Taste and adjust seasoning with salt & pepper and you now have Mornay sauce.



Last modified on Mon 8 July 2019 1:52 pm

Filed in: Sauce Recipes

Comments (8)

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  1. Willie Belford says:

    You’ve omitted the mustard and egg yolk which, if you’re making sauce mornay, are essential ingredients otherwise what you’re making is a common or garden cheese sauce.

    • Hi Willie, I’m sure the addition of mustard and egg yolk is fantastic after reading your email I searched for another Mornay sauce recipe with those ingredients and couldn’t find any. Can you send me your source so I can fix this post? Thanks

      • Richard says:

        Willie may be partially correct. The classic bechamel doesn’t have either of those ingredients; but in the Original 1896 Fannie Farmer cookbook there is an entry for a yellow bechamel sauce. This variation calls for adding three beaten egg yolks to two cups of bechamel.

    • Corine Foultz says:

      I went to culinary school and we didn’t add mustard or eggs to our mornay?

      • Seth says:

        Agreed, also a culinary school grad and egg/mustard are not taught as ingredients to Mornay. But we did learn that proper Mornay is Swiss, Guyere and Emmental in bechamel.

  2. Guest says:

    I’m no connisoir, just an Aussie who grew up on old fashioned (turn of the 18th-19th century learnt) British migrant cooking. Understandably, my mum learnt from her mum, but to cut a long story short, Mac was a cheese sauce & Mornay had more tang ….. but there’s more than one type of Mornay eh.

  3. Howard says:

    This recipe comes from and is the only one with mustard and egg yolks I’ve seen. There are probably a few more such recipes;

    1 1/2 c. med. Bechamel or Veloute Sauce
    1/4 to 1/2 c. grated Gruyere, Swiss or sharp Cheddar cheese
    1/4 c. grated Parmesan cheese
    1 1/2 tsp. Dijon mustard
    3/4 tsp. dry mustard
    2 egg yolks, beaten
    Place Bechamel or Veloute Sauce in small heavy bottomed saucepan over low heat. Stir in cheeses and mustards. Add small amount of hot sauce to egg yolks, beating constantly. Return yolk mixture to sauce and blend thoroughly with whisk. Over low heat, bring sauce just to boiling point. Makes about 2 cups.

  4. Dennis says:

    So for a french receipe some 400 years old the only expert is an american from 200 years ago.

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