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french onion sauce soubise in a sauceboat.

White Onion Sauce or Sauce Soubise

Amanda
A béchamel sauce enriched with slow cooked buttery onions that is thick and decadent and perfect with meats and vegetables.
4.61 from 23 votes
Prep Time 5 minutes
Cook Time 35 minutes
Total Time 40 minutes
Course Sauce
Cuisine French
Servings 4
Calories 241 kcal

Equipment

  • saucepan
  • blender

Ingredients
 
 

  • 1 quantity béchamel sauce made with 500ml or 17fl oz milk
  • 450 g onions
  • 80 g butter
  • seasoning to taste
  • grated nutmeg optional

Instructions
 

  • Peel and chop the onions.
  • Melt the butter in a medium sized saucepan, add the onions and stir them into the butter.
  • Put a lid on the saucepan and turn the heat to medium low for 20 minutes, stirring occasionally.
  • Take off the lid and cook for another 10 minutes to allow some of the liquid to evaporate.
  • Add the onions to a blender and pulse them a few times to get to your preferred consistency.
  • Add the béchamel to the onions and combine.
  • Check the seasoning and serve.

Notes

Disclaimer:
The nutritional information provided is approximate and is calculated using online tools. Information can vary depending on various factors, but we have endeavoured to be as accurate as possible.

Nutrition

Calories: 241kcalCarbohydrates: 15gProtein: 3gFat: 20gSaturated Fat: 13gTrans Fat: 1gCholesterol: 53mgSodium: 147mgPotassium: 169mgFiber: 2gSugar: 6gVitamin A: 631IUVitamin C: 8mgCalcium: 67mgIron: 1mg
Keyword bechamel, onion, soubise, white sauce
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