This simple and delicate Onion Sauce has a wonderful sweet flavor and the nutmeg compliments the sauce so well. It's perfect over chicken.
This is a very simple sauce that is sometimes referred to as Sauce Soubise.
Why This Recipe Works
- This simple yet delicate sauce literally comes together in minutes!
- It has a wonderful sweet flavor and the nutmeg compliments the sauce so well.
Ingredient Notes
See recipe box below for ingredient amounts and full recipe instructions.
- Onions: Use yellow onions, thinly sliced.
- Butter: I recommend using salted butter.
- Flour: To thicken the sauce, I typically use all-purpose flour but you can you a gluten-free blend instead.
- Seasonings: Salt, pepper, and nutmeg.
- Chicken broth: I like to use low sodium chicken broth because it helps me to control the amount of sodium in the dish. You can always add a pinch more salt if necessary.
How To Make This Recipe
- Melt butter in a large skillet.
- Add the onions to the pan and slowly cook them for about 7-8 minutes.
- Stir in the flour. Add the salt, pepper, and nutmeg.
- Pour in the broth, reduce the heat and simmer gently for about 15 minutes.
Expert Tips
- You can use white, yellow, or red onions for onion sauce. My preference is to use a sweet yellow onion.
- Serve with a Juicy Roasted Lemon Chicken or Sheet Pan Chicken.
Frequently Asked Questions
How Do You Thicken Onion Sauce?
If the sauce appears too thick, add a few drops of the chicken broth.
If it is too thin, gently simmer again until it has reduced.
How Do I Store Leftover Onion Sauce?
Store onion sauce covered in the refrigerator for up to 4 days.
Enjoy!

Onion Sauce For Chicken
Ingredients
- 3 medium onions , peeled and thinly sliced
- 2 tablespoons butter
- 1 tablespoon all-purpose flour
- 1/2 teaspoon salt
- dash of pepper
- dash of nutmeg
- 1 cup chicken broth
Instructions
- Thinly slice the onions.
- Place the butter in a large skillet or saucepan heated to medium heat.
- Add the onions to the pan and slowly cook them for about 7-8 minutes.
- Stir in the flour. Add the salt, pepper and nutmeg and stir.
- Pour in the broth, reduce the heat and simmer gently for about 15 minutes.
- It the sauce appears too thick, add a few drops of the chicken broth. If it is too thin, gently simmer again until it has reduced.
The information shown is an estimate provided by an online nutrition calculator. It should not be considered a substitute for a professional nutritionist’s advice.