French Onion Soup from Famous and Barr – A St. Louis Classic

Let me tell you a story. Growing up in Morocco, my mother’s kitchen was an orchestra of warm spices—cinnamon, saffron, and cumin. But I also have a deep, abiding love for classic French onion soup, a dish I mastered decades later at Le Cordon Bleu in Paris. This particular version, however, has a special place in my heart. It’s the French onion soup from Famous and Barr, a legendary recipe from the retail stores in St. Louis, MO. This classic French onion soup is not just any soup; it’s a rich, deeply savory broth, a mountain of caramelized onions, and a blanket of melted Gruyère that pulls apart with every spoonful. The unique angle here is the overnight rest, a step that deepens the flavor in a way that feels almost magical.

Imagine a chilly evening in my New York City apartment. The rain is pattering against the window, and I have this pot of golden, deeply fragrant broth simmering on the stove. The aroma alone is a promise. The onions, cooked for nearly two hours until they are a sweet, jammy tangle, melt into a beef broth that is fortified with a touch of paprika and white wine. The texture is pure comfort: the crisp, buttery crouton soaks up just the right amount of broth, while the cheese layer is both stretchy and gloriously browned. Each bite is a study in contrasts—sweet and savory, silky and crunchy, humble and utterly elegant.

After years of perfecting this recipe from acclaimed restaurants and my own French training, I can tell you this rendition is the best French onion soup recipe for a reason. It’s not about shortcuts; it’s about technique. The overnight rest is the game-changer. Many home cooks rush the soup, but giving it a full night in the fridge melds the flour, wine, and broth into a velvety symphony. The most common mistake? Burning the croutons under the broiler. I’ll show you how to get them perfectly golden. Trust me, this easy French onion soup is worth every minute, and I’m about to show you why.

Why This French Onion Soup Recipe Is the Best

The Flavor Secret: My Parisian training taught me that patience is the most important ingredient. This recipe is distinguished by its use of paprika—a gentle nod to my Moroccan roots—and the sheer volume of onions (five pounds!). Most recipes stop at two pounds. The overnight rest is my secret weapon; it allows the flavors of the bay leaf, pepper, and wine to integrate fully, making this the most deeply flavorful homemade French onion soup you’ll ever have.

Perfected Texture: Texture is everything. The key is the flour slurry, which I mix into a portion of the cold broth before adding it to the pot. This technique, taught to me by a chef in Paris, prevents lumps and creates a silky, velvety broth that clings to the onions and bread. The second key is the bread. I brush it with olive oil and Parmesan, then broil it until just golden brown. This creates a barrier that keeps the bread from turning into a soggy mess under the broiler with the cheese.

Foolproof & Fast: While the total time is long, the active work is surprisingly low. Most of the three to four hours is hands-off simmering. The recipe is forgiving: you can use Swiss cheese in place of Gruyère without ruining the dish (I do it all the time). This is a hearty meal-in-a-bowl that feeds a crowd and is almost impossible to mess up, making it a perfect weekend project for any home cook.

Classic French Onion Soup Ingredients

I pick up most of my ingredients from the Union Square Greenmarket in NYC. For the onions, I grab the sweetest white ones I can find. The beef broth is key—I look for a low-sodium brand from the store, as we’ll season it ourselves. And for the cheese, I always splurge on a real Gruyère, but I keep a block of Swiss on hand for when I’m feeling budget-conscious.

Ingredients List

• 5 pounds white onions (medium size)
• 1/2 cup butter
• 1 1/2 teaspoon pepper
• 2 tablespoons paprika
• 1-2 bay leaves
• 3/4 cup flour
• 96 ounces beef broth (3-32 oz containers)
• 1 cup white wine
• Salt to season
• 1 loaf French baguette (sliced)
• 3 tablespoons olive oil
• 1/4 cup Parmesan cheese (grated)
• 16 ounces Gruyère cheese (can substitute Swiss which I often do)

Ingredient Spotlight

White Onions: They are the star of this show. White onions have a sharper, cleaner flavor than yellow onions, which makes their sweetness more pronounced when caramelized. Look for firm, heavy bulbs with a papery, dry skin.

Beef Broth: The backbone of the soup. Use a high-quality, low-sodium store-bought broth or, for the best results, homemade stock. A rich broth is essential for a deep flavor. I prefer Swanson or Kitchen Basics for consistency.

Gruyère Cheese: This Swiss cheese is prized for its nutty, slightly sweet flavor and excellent melting properties. It forms that iconic, stretchy, golden-brown crust. If you can’t find it, a good quality Emmental or a sharp provolone will work as a substitute, though the flavor will be slightly different.

Original Ingredient	Best Substitution	Flavor / Texture Impact
Gruyère Cheese	Emmental or Swiss	Slightly less nutty, still melts beautifully.
White Onions	Yellow Onions	Sweeter, softer flavor; still works perfectly.
White Wine	Dry Sherry or Vermouth	Adds a slightly different acidity and depth.

How to Make French Onion Soup — Step-by-Step

This is a labor of love, but I promise you, every minute is worth it. Let’s break it down so it feels easy, not overwhelming.

Step 1: Caramelize the Onions

Slice the 5 pounds of white onions 1/8-inch thick. In a very large pot, melt the 1/2 cup of butter over medium-low heat. Add the sliced onions and cook, stirring occasionally, for 1.5 to 2 hours. They should become a deep amber color, soft and sweet. Do not rush this step; low and slow is the key.

💡 mia’s Pro Tip: Don’t crowd the pot. If the onions are too packed, they will steam instead of caramelize. Use the largest Dutch oven you have, and if needed, cook the onions in two batches.

Step 2: Season and Build the Broth Base

Add the 1 1/2 teaspoons of pepper, 2 tablespoons of paprika, and 1-2 bay leaves to the caramelized onions. Mix well and sauté for 2-3 minutes over low heat, stirring frequently to toast the spices and release their oils. This is where the magic happens.

⚠️ Common Mistake to Avoid: Adding the spices at the end. Toasting them at this stage deepens their flavor and prevents a raw, dusty taste in the final soup.

Step 3: Thicken and Simmer

Add 2/3 of the beef broth (about 64 ounces) to the pot and stir well. In a separate bowl, whisk the 3/4 cup of flour into the remaining 32 ounces of cold broth until smooth. Add this slurry to the pot, stirring constantly. Add the 1 cup of white wine and bring to a gentle simmer. Cook for 2 hours, stirring occasionally.

💡 mia’s Pro Tip: This overnight rest is not optional—it’s the single most important step for achieving a restaurant-quality broth. The flavors marry and the starch from the flour fully hydrates, creating a silky, not pasty, texture.

Step 4: Refrigerate Overnight

This is the critical secret. Let the soup cool completely, then refrigerate it overnight. Not only does this deepen the flavor, but it also allows the fat to solidify on top, making it easy to skim off. The next day, your soup will taste like it has been simmering for 12 hours.

⚠️ Common Mistake to Avoid: Skipping the overnight rest. Many recipes claim it’s optional, but it transforms the texture and flavor dramatically. It is the defining step of this Famous and Barr recipe.

Step 5: Prepare the Bread

Preheat your broiler. Slice the French baguette into 1-inch thick rounds. Brush each slice with olive oil and sprinkle generously with grated Parmesan cheese. Place under the broiler and watch carefully—they will brown in just 1-2 minutes. The goal is a light golden-brown, not a deep toast.

💡 mia’s Pro Tip: Use day-old bread if you have it. It is sturdier and will hold up better under the broth and cheese, preventing sogginess.

Step 6: Reheat and Assemble

Heat the chilled soup on the stovetop over medium heat until it comes to a gentle simmer. Ladle the hot soup into ovenproof bowls. Place a Parmesan-toasted crouton on top of each bowl. Pile high with shredded Gruyère or Swiss cheese.

⚠️ Common Mistake to Avoid: Adding the bread directly into the soup before broiling. The oil and Parmesan create a moisture barrier; if the bread soaks up too much liquid beforehand, it becomes a soggy mess.

Step 7: Broil and Serve

Place the bowls on a baking sheet and place them under the broiler. Broil for 3-5 minutes, watching very carefully. You want the cheese to melt and bubble, with golden-brown spots forming on top. Remove and let cool for a couple of minutes before eating. The bowls will be extremely hot!

💡 mia’s Pro Tip: Place your oven-safe bowls on a sturdy baking sheet before broiling. This catches any drips and prevents the bowls from cracking due to thermal shock.

Step	Action	Duration	Key Visual Cue
1	Caramelize Onions	1.5 – 2 hours	Deep amber color, very soft
2	Add Spices	2-3 minutes	Fragrant, paprika smells toasty
3	Simmer Soup	2 hours	Gentle bubbles, slightly thickened
4	Chill Overnight	8+ hours	Fat solidifies on top
5	Toast Croutons	1-2 minutes	Light golden brown, not dark
6	Assemble & Broil	3-5 minutes	Cheese is bubbling and browned

Serving & Presentation

This soup is a showstopper. It is meant to be served in individual ovenproof bowls—classic onion soup crocks are ideal. Bring the bowls to the table on a heat-safe trivet or a small plate. The first thing your guests will see is the golden, bubbly cheese crust. When they dig in, they will find a rich, dark broth and soft, sweet onions.

For a classic Parisian touch, I like to add a hearty pinch of fresh thyme leaves and a grind of black pepper over the melted cheese just before serving. It adds a pop of color and a fresh, herbal note. In my New York City kitchen, I often serve this with a simple green salad on the side dressed with a sharp vinaigrette to cut through the richness.

Pairing Type	Suggestions	Why It Works
Side Dish	Simple green salad, roasted asparagus	The acidity and crunch balance the rich, cheesy soup.
Garnish	Fresh thyme, minced parsley, cracked pepper	Adds freshness and a pop of color to the rich dish.
Beverage	Dry red wine (Beaujolais), light beer (lager)	The acidity and tannins cut through the fat and complement the savory broth.
Dip	Dijon mustard on the side	A tiny dab of mustard on the bread adds a sharp, tangy kick.

Make-Ahead, Storage & Reheating

This is the perfect meal prep soup. In my busy NYC life, I like to make the

Print