Skip to main content New<> this month
Get the Allrecipes magazine

Green Onion-Parmesan Mornay Sauce

Rated as 4.81 out of 5 Stars

"A rich and creamy cheese sauce for chicken or vegetables. Made with Swiss, Parmesan, cream and scallions. Great over chicken cordon bleu!"
Added to shopping list. Go to shopping list.


35 m servings 576
Original recipe yields 6 servings (3 cups)


{{model.addEditText}} Print
  1. Melt butter in a heavy saucepan over medium heat. Stir in green onion and parsley; cook until the green onion has softened, about 3 minutes. Stir in flour and cook for 3 minutes more, stirring constantly.
  2. Pour in the cream, increase heat to medium-high and bring to a simmer. Once the cream comes to a simmer, reduce heat to medium-low and whisk in the shredded Swiss and Parmesan cheeses. Slowly simmer, uncovered, until the sauce has thickened, about 3 minutes. Season to taste with salt and pepper before serving.

Nutrition Facts

Per Serving: 576 calories; 55.4 6.8 14.6 183 467 Full nutrition

Explore more


Read all reviews 18
Most helpful
Most positive
Least positive

I am always cooking the same thing everything night. So when I tried this recipe to spice up my chicken, my family was so excited!! This sauce is delicious! I made it with chicken and even trie...

Wow, this was great. I stuffed some mushrooms with wild and white rice, onions, garlic and parsley, added a little of this sauce to the mixture. I stuffed the mushrooms and placed in a cassaro...

This is the best mornay Sauce I've ever eaten! I tried it over chicken cordon bleu as suggested and it was awesome! Even the kids loved it. I also tried it on fresh string beans. I will be makin...

Delicious as is! I added pasta and it was a very elegant side dish served with chicken. Will definitely make again. Thank you!

This is a pretty good recipe that I make with homemade chicken cordon bleu. I omit the green onions and also give it a good sized splash of dry white wine because we like the depth of flavor it ...

I never even knew what mornay sauce was until I stumbled across this recipe. I'm not a big fan of swiss cheese, but it sounded like it would go perfectly with the veal chops I was going to cook,...

Made this sauce yesterday. I didn't think I would like it because I don't like swiss cheese, but my hubby does. We both LOVED this sause. I followed the recipe exactly. Will make again often!

I've made this recipe twice and am always surprised by how delicious it is. Nothing more to add!

This was easy and just incredible! Served it over medium shell pasta with grilled salmon and broccoli. It was so good, everyone coated the whole meal with this sauce!