Gusto TV French Onion Soup Recipe - Caramelized Vidalia Gruyere Melt

French Onion Soup Recipe – Caramelized Vidalia Gruyere Melt

This French Onion Soup recipe transforms 10 pounds of thinly sliced Vidalia onions into deep caramelized mahogany through 2-hour patient sweating, crowned by Gruyere-Emmentaler crostini broiled to bubbling golden crust — classic bistro perfection. From A IS FOR APPLE Episode 1005 “Olives and Onions,” hosted by Robert Jewell, this labor-of-love soup delivers sherry vinegar brightness cutting onion sweetness while thyme-peppercorn sachet infuses aromatic depth.

The Inspiration

This French Onion Soup recipe traces noble Parisian origins where les Halles market porters sustained through onion-laden broth — slow caramelization breaks cellular walls releasing glutamates and inulin sugars, creating umami symphony that sherry vinegar lifts without overpowering. Robert Jewell elevates Vidalia’s natural candy through kosher salt catalysis (2 hours undisturbed sweating), precise ¼-inch grain-cut slices (texture retention), and flour roux binding fat into velvety body. Thyme-bay-peppercorn sachet perfumes without muddying clarity; beef stock’s gelatinous richness coats spoon luxuriously.

Ingredients

10 large Vidalia or Spanish onions
½ cup (125 ml) butter
1 tbsp (15 ml) kosher salt
2 tbsp (30 ml) all-purpose flour
¼ cup (60 ml) sherry vinegar
8 cups (2 liter) beef stock
1 small French baguette cut a little less than ½ inch (1.25cm)
1 tbsp (15 ml) olive oil
8-12 thin slices of Emmentaler cheese-about a 4 inch (10cm) square
2 cups (500 ml) grated gruyere cheese

Sachet

4 bay leaves
1 tbsp (15 ml) whole peppercorns
1 bunch fresh thyme (about 12 sprigs)
6-inch (15 cm) piece of cheese cloth with butcher string for a tie

Method

Peel onions and remove the tops and core.
Cut the onions with the grain ¼ inch (.31cm) slices. You should have 7 liters (7.3 quarts) of onions.
Place butter in a large soup pot set over low heat. Allow to melt.
Add the onions and salt. (Salt aids in breaking down the cellular structure of the onion.)
Cook until completely reduced and caramelized all over. Stirring occasionally. Approximately 2 hours.
Make the sachet by tying peppercorns, thyme and bay leaves in a cheese cloth to make a pouch.
Once onions have reduced add flour to the pan to absorb any extra oil and add body to soup.
Add the sherry vinegar.
Add the beef stock and the sachet. Simmer 1 hour.
Season to taste with salt and pepper.
For the croutons take the slices of bread and drizzle with olive oil.
Place on a baking tray. Place in a preheated 375F (190°C) oven to toast for 5 minutes or until golden brown and crispy on both sides. Flipping the bread over if necessary.
Place onion soup bowls (oven proof bowls) on a baking tray.
Fill the bowls with soup leaving a ½ inch (1.25cm) deep border.
Top with croutons 2 per bowl and place 2 slices of cheese on top of the crouton.
Scatter the grated cheese equally over the soup bowls.
Place under broiler to caramelize and melt the cheese watching closely.
Or place in preheated 400F (204°C) oven to melt and caramelize the cheese for 15 minutes.
Remove from oven and serve.

Serving Suggestions

Ladle French Onion Soup into heated bowls preserving steam, positioning crostini-cheese island prominently for spoon-cracking ritual, or serve family-style tureen with side crostini tower for communal assembly — episode’s olive-onion theme begs castelvetrano olives and cornichons providing briny counterpoint while caramelized shallot confit elevates side salad. Bistro progression starts chilled vichyssoise preceding hot soup; winter holidays demand mug-sized portions preceding roast beef.

Pair Alsace Riesling matching onion perfume or bold Côtes du Rhône embracing beefiness; deconstruct into French dip where au jus becomes onion-enriched while cheese toasts crown baguette. Après-ski parties convert to crockpot version (sauté stovetop first); reheating maintains texture through low simmer only — never boil.

Final Thoughts

French Onion Soup recipe from A IS FOR APPLE Episode 1005 “Olives and Onions,” hosted by Robert Jewell, delivers authentic Parisian perfection caramelizing 10 pounds Vidalia onions 2 hours low-slow until mahogany jammy concentrate, fortified by sherry vinegar brightness, beef stock depth, and thyme-peppercorn sachet infusion — ovenproof bowls brim with amber broth beneath Gruyere-Emmentaler crostini broiled to bubbling golden crust stretching satisfyingly with every spoonful. Precise ¼-inch grain-slicing, kosher salt catalysis, and flour roux create unmatched body-texture balance serving 6 generously as main or 12 as starter, scaling effortlessly from intimate dinner to holiday buffet centerpiece with baguette crostini providing essential crunch contrast.

Find more recipes from A is for Apple here!