Print
clock clock iconcutlery cutlery iconflag flag iconfolder folder iconinstagram instagram iconpinterest pinterest iconfacebook facebook iconprint print iconsquares squares iconheart heart iconheart solid heart solid icon
Onion Sauce Recipe

Onion Sauce Recipe


5 Stars 4 Stars 3 Stars 2 Stars 1 Star

4.6 from 24 reviews

  • Total Time: 5 minutes
  • Yield: 2 1x

Description

Creamy onion sauce elevates simple dishes with its rich, silky texture, bringing French culinary elegance to your plate. Bold flavors meld together, creating a luxurious companion that enhances meats, vegetables, and pasta with pure gastronomic pleasure.


Ingredients

Scale

Main Ingredients:

  • 1/2 onion, thinly sliced
  • 1.5 cups (360 milliliters) milk

Sauce Base:

  • 40 grams (1.4 ounces) butter
  • 2 tablespoons plain flour

Garnish:

  • 1 teaspoon chopped parsley (optional)

Instructions

  1. Gently melt butter in a medium saucepan, maintaining a moderate temperature to prevent burning.
  2. Sprinkle flour into melted butter, stirring continuously to create a smooth, pale roux and eliminate raw flour taste, cooking for approximately 60 seconds.
  3. Carefully remove saucepan from heat source and gradually introduce milk, whisking vigorously to prevent potential clumping and ensure a silky texture.
  4. Return saucepan to heat, incorporating finely chopped onions into the creamy mixture and allowing the liquid to reach a gentle boil.
  5. Reduce heat to low, allowing sauce to simmer and develop rich flavors, stirring occasionally to prevent scorching, for roughly 2 minutes.
  6. Remove from heat and fold in freshly chopped parsley for a vibrant, aromatic finish.
  7. Transfer sauce to a serving vessel and present warm, enhancing accompanying dishes with its delicate, creamy consistency.

Notes

  • Prevent lumpy sauce by whisking milk gradually and steadily into the roux, ensuring smooth incorporation.
  • Select sweet onions like Vidalia for a milder, more delicate flavor profile that complements the creamy sauce.
  • Consider adding a pinch of nutmeg or white pepper to enhance the sauce’s depth without overpowering the onion’s natural sweetness.
  • Transform this classic sauce into a gluten-free version by substituting all-purpose flour with cornstarch or arrowroot powder.
  • Prep Time: 2 minutes
  • Cook Time: 3 minutes
  • Category: Lunch, Dinner, Appetizer, Snacks
  • Method: Simmering
  • Cuisine: American

Nutrition

  • Serving Size: 2
  • Calories: 142 kcal
  • Sugar: 5 g
  • Sodium: 75 mg
  • Fat: 8 g
  • Saturated Fat: 5 g
  • Unsaturated Fat: 2 g
  • Trans Fat: 0.2 g
  • Carbohydrates: 12 g
  • Fiber: 1 g
  • Protein: 4 g
  • Cholesterol: 25 mg