French Onion Soup
French Onion Soup is a medium French recipe that serves 4. 250 calories per serving. Recipe by Williams Sonoma on YouTube.
Prep: 10 min | Cook: 1 hr 15 min | Total: 1 hr 40 min
Cost: $6.00 total, $1.50 per serving
Ingredients
- 4 each Yellow Onion (sliced into 1/4‑inch thick slices)
- 4 tbsp European Style Butter (higher fat content for richer flavor)
- 2 tbsp Olive Oil (for sautéing the onions)
- 6 cups Low‑Sodium Beef Stock (good quality, controls salt level)
- 1 tsp Salt (to taste)
- 0.5 tsp Freshly Ground Black Pepper (to taste)
Instructions
Slice the Onions
Trim the ends off the onions, halve them, and slice each half into 1/4‑inch thick slices.
Time: PT5M
Heat Butter and Olive Oil
Place the Dutch oven over medium heat and add the butter and olive oil. Allow the butter to melt completely.
Time: PT3M
Caramelize the Onions
Add the sliced onions to the pot, stirring to coat them in the butter‑oil mixture. Cook, stirring occasionally, for about 40 minutes until the onions are deep golden brown and sweet‑scented. If the onions start to stick, add a splash of water.
Time: PT40M
Add Beef Stock
Pour the low‑sodium beef stock into the pot, scraping up any browned bits from the bottom. Stir to combine.
Time: PT5M
Simmer the Soup
Bring the soup to a gentle simmer and let it cook for 27 minutes, uncovered, allowing the flavors to meld.
Time: PT27M
Season and Serve
Taste the soup and season with salt and freshly ground black pepper as needed. Ladle into bowls and serve hot.
Time: PT2M
Nutrition Facts
- Calories
- 250
- Protein
- 10 g
- Carbohydrates
- 30 g
- Fat
- 10 g
- Fiber
- 3 g
Dietary info: Contains dairy, Gluten‑free if served without bread
Allergens: Dairy
Ingredient Substitutions
- Instead of Yellow Onion: Sweet onion, Vidalia onion
- Instead of European Style Butter: Unsalted butter
- Instead of Olive Oil: Canola oil, vegetable oil
- Instead of Low‑Sodium Beef Stock: Homemade beef stock, Low‑sodium vegetable stock
- Instead of Salt: Sea salt, Kosher salt
- Instead of Freshly Ground Black Pepper: White pepper
Equipment Needed
- Large Dutch Oven or Heavy‑Bottomed Pot
- Chef's Knife
- Cutting Board
- Wooden Spoon
- Measuring Cups
- Ladle
- Heat‑Resistant Soup Bowls (optional)
- Broiler (optional) (optional)
Critical Steps — Do Not Skip
- Slice onions uniformly to ensure even caramelization.
- Do not rush the caramelization; allow 40 minutes for deep flavor development.
Chef Tips from the Video
- European style butter adds extra richness because of its higher fat content.
- Stir the onions only occasionally; constant stirring can prevent proper browning.
Troubleshooting
Onions are not turning brown enough.
Increase the caramelization time and keep the heat at medium‑low, stirring occasionally. Adding a splash of water can help prevent burning.
Soup tastes too salty.
Use low‑sodium stock as recommended and add salt gradually at the end, tasting before each addition.
Storage
Refrigerator: Store in an airtight container for up to 3 days.
Freezer: Freeze in freezer‑safe bags or containers for up to 2 months.
Room temperature: Do not leave at room temperature for more than 2 hours.
Make-Ahead Tips
- Caramelize the onions up to 2 days ahead and store them in the refrigerator.
- Prepare low‑sodium beef stock in bulk and freeze portions for future soups.
Frequently Asked Questions
What is the cultural significance and history of French Onion Soup in French cuisine?
French Onion Soup, or soupe à l’oignon, dates back to Roman times but became a staple of French peasant cooking in the 18th century. It was popularized in Parisian bistros as a hearty winter dish, often finished with toasted bread and melted cheese.
What are the traditional regional variations of French Onion Soup in France?
In the Alsace region, the soup is sometimes finished with a slice of Gruyère cheese, while in Lyon, a splash of dry white wine is added to the stock. Some coastal versions incorporate seafood broth for a lighter taste.
How is French Onion Soup traditionally served in France?
Traditionally, the soup is ladled into shallow bowls, topped with a toasted baguette slice, and covered with grated Gruyère or Comté cheese, then broiled until bubbly and golden.
What occasions or celebrations is French Onion Soup traditionally associated with in French culture?
French Onion Soup is a classic comfort food for cold winter evenings and is often served as a starter at holiday meals, especially during Christmas and New Year’s gatherings.
What other French dishes pair well with French Onion Soup?
A crisp green salad with a Dijon vinaigrette, a simple charcuterie board, or a buttery croissant complement the rich flavors of French Onion Soup beautifully.
What makes French Onion Soup special or unique in French cuisine?
The deep, sweet flavor that comes from slowly caramelizing onions sets it apart, turning a humble vegetable into a luxurious, aromatic broth that embodies French culinary patience and technique.
What are the most common mistakes to avoid when making French Onion Soup?
The biggest mistakes are rushing the caramelization, using high heat that burns the onions, and adding too much salt early. Take time with the onions and season at the end.
Why does this French Onion Soup recipe use European style butter instead of regular butter?
European style butter has a higher butterfat content (around 82 %) and lower water, which gives a richer mouthfeel and helps the onions brown more evenly without splattering.
Can I make French Onion Soup ahead of time and how should I store it?
Yes, you can caramelize the onions and prepare the soup up to two days in advance. Store the soup in an airtight container in the refrigerator and reheat gently before serving.
What does the YouTube channel Williams Sonoma specialize in?
The YouTube channel Williams Sonoma focuses on high‑quality home cooking tutorials, kitchen product showcases, and classic recipes that highlight professional techniques for home cooks.
How does the YouTube channel Williams Sonoma's approach to French cooking differ from other cooking channels?
Williams Sonoma emphasizes precise technique, premium ingredients like European style butter, and clear visual instruction, often using their own kitchen tools to demonstrate how to achieve restaurant‑level results at home.
Last updated: August 21, 2026
