Chicken Cordon Bleu Sauce
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If you’re making Chicken Cordon Bleu and skipping the sauce, rethink that! This rich, creamy, slightly tangy Chicken Cordon Bleu Sauce pulls everything together and gives the whole dish that extra something it needs. Plus, it uses pantry basics you probably already have. So let’s just skip the regret and make the good stuff.

Ingredient Notes + Variations
This chicken cordon bleu sauce comes together with a handful of simple ingredients each playing a big part in flavor and texture.
- Butter – The base for your roux. Don’t swap it for oil or margarine.
- Whole milk – Adds richness. You can use 2%, but whole milk gives a creamier finish.
- Dijon mustard – Adds that signature tang and bite. Don’t use yellow mustard, it’s not the same.
- Parmesan cheese – Freshly grated only. Pre-shredded won’t melt the same.

How to Make Chicken Cordon Bleu Sauce
This sauce comes together fast. Like, you could make it in the time it takes to reheat your chicken. It’s a quick stovetop recipe that finishes with a stir of cheese and a splash of stock if you want to thin it out. Grab a whisk and let’s go. For full recipe details, including ingredients needed and measurements, see the printable recipe card down below.
Step 1: Make a Roux

melt butter in small saucepan

add flour

cook until it smells nutty
Step 2: Add Liquids
Step 3: Finish the Sauce

Tips for Success
- Whisk constantly while cooking the roux and milk mixture to avoid lumps.
- Don’t let the sauce boil after adding the cheese or it can get grainy.
- Add chicken stock a little at a time if you need to thin it out.
- Taste before adding salt. Parmesan and stock already bring some saltiness.

What to Serve With Chicken Cordon Bleu Sauce
- Baked Chicken Cordon Bleu – Obviously. This sauce was made for it.
- Chicken Cordon Bleu Casserole or Crockpot Chicken Cordon Bleu Casserole.
- Chicken Cordon Bleu Sandwich on a Pretzel Bun – That mustardy flavor works so well here.
- Air Fryer Chicken Skewers – A drizzle of this sauce takes them up a notch.
- Steamed Broccoli – use this sauce instead of the typical cheese topping.
You’re five minutes away from a sauce that’ll make your chicken cordon bleu taste restaurant-level good. Totally worth the whisk. 😉

Chicken Cordon Bleu Sauce
Ingredients
- 2 tablespoons butter
- 2 tablespoons all-purpose flour
- 2 cups whole milk
- 1/2 cup chicken stock + more to thin out if needed
- 2 tablespoons dijon mustard
- 2 tablespoons honey
- 1/2 cup parmesan cheese freshly grated
- 3/4 teaspoon salt or to taste
- 1/2 teaspoon black pepper or to taste
Instructions
- Place a small saucepan over medium heat.
- Add butter and flour, whisking to combine. Cook for 2-3 minutes, whisking frequently.
- Whisk in milk and chicken stock and allow to just come up to a boil before removing from heat. If sauce is too thick for your liking, add more stock.
- Whisk in dijon mustard, honey, and parmesan cheese. Season with salt and black pepper to taste.
- Place into a small jar or serving dish and refrigerate until read to use as desired.
- Reheat in saucepan or microwave before serving.
Video
Notes
Storage Instructions
- Make ahead: You can make this sauce up to 3 days in advance. Store it in an airtight container in the fridge.
- Reheat: Gently warm it in a saucepan over low heat or microwave in short bursts, stirring in between.
- Freeze: Technically yes, but it’s not ideal. The texture might get a little weird after thawing, so it’s best enjoyed fresh or refrigerated.
Nutrition
More Saucy Recipes to Try
- Slow Cooker Honey Mustard Chicken – Serve over my famous Butter Rice or Buttery Mashed Potatoes.
- 3 Ingredient Alfredo Sauce – Another dreamy sauce that takes 10 minutes or less.
- Slow Cooker Bolognese Sauce – If you like pasta, then this is the sauce you need to make pronto.
If you make this recipe, I would really appreciate it if you would give it a star rating and leave your review in the comments! If you have a picture of your finished dish, post it on Instagram using the hashtag #laurenslatest and tagging me @laurens_latest.










Hello! Do you recommend salted or unsalted butter for the sauce? Thanks!
I always use salted butter 🙂