Brenda Gantt French Onion Soup
- Prep 15 min
- Cook 1 hr 15 min
- Total 1 hr 30 min
- Serves 6
- Level Easy
About Brenda Gantt’s French Onion Soup
Brenda Gantt is a Southern home cook from Andalusia, Alabama, known for unfussy recipes that rely on simple ingredients and patience. French onion soup fits that approach well: a few humble ingredients, mostly onions, butter, and broth, turn into something deeply savory when they are given time. You can find more of her down-to-earth cooking across our Brenda Gantt recipes.
French onion soup began as a classic French bistro dish and became a favorite on American tables, especially when the weather turns cool. The key is slow caramelization. As the onions cook, their natural sugars brown and the flavor goes from sharp to mellow and sweet, which gives the broth its depth. A toasted slice of bread and a blanket of melted cheese finish the bowl.
This is a recipe for a slow Sunday or a cold evening. It takes about 90 minutes, but most of that is hands-off simmering. If you like hearty soups, you may also enjoy her vegetable soup, potato soup, and chicken soup.
Watch How It’s Made
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Brenda Gantt French Onion Soup Recipe
Ingredients
Soup
Cheesy Toast Topping
Kitchen Tools Needed
- Large Dutch oven or heavy pot
- Sharp knife & cutting board
- Wooden spoon
- Broiler-safe soup bowls
- Baking sheet
- Ladle
Not sure which pot or bowls to use? Our kitchen guides cover the basics.
Instructions
- Slice the onions. Peel the onions, halve them from root to tip, and slice them thinly, about ⅛ inch thick. Thin, even slices cook down evenly.
- Caramelize the onions. Melt the butter with the olive oil in a large Dutch oven or heavy pot over medium heat. Add the onions, salt, and sugar. Cook, stirring every few minutes, for 40 to 45 minutes, until the onions are deep golden brown and jammy. If they stick or darken too quickly, lower the heat and add a splash of water.
- Add garlic and flour. Stir in the garlic and cook for 1 minute. Sprinkle in the flour and stir for 1 to 2 minutes until no dry flour remains.
- Deglaze. Pour in the wine and scrape up the browned bits from the bottom of the pot. Cook for 2 to 3 minutes until mostly evaporated.
- Simmer. Add the broth, Worcestershire sauce, thyme, bay leaves, and pepper. Bring to a boil, reduce the heat to low, and simmer partially covered for 30 minutes. Remove the bay leaves and thyme stems, then taste and adjust the salt.
- Toast the bread. Position an oven rack about 6 inches from the broiler and preheat the broiler to high. Toast the bread slices on a baking sheet for 1 to 2 minutes per side until dry and lightly golden.
- Assemble the bowls. Set 6 broiler-safe soup bowls on a baking sheet. Ladle in the hot soup, filling each bowl about three-quarters full. Top each with a slice of toasted bread and a generous layer of cheese.
- Broil and serve. Broil for 2 to 4 minutes, watching closely, until the cheese is bubbly and browned in spots. Let the bowls sit for 2 to 3 minutes before serving hot, since the bowls and cheese are very hot.
Patience with the onions is the whole recipe. If they look done after 20 minutes, keep going: they should be the color of a copper penny.
Nutrition Facts
| Calories | 430 |
|---|---|
| Protein | 20 g |
| Carbohydrates | 33 g |
| Fat | 23 g |
| Fiber | 3 g |
| Sodium | 1,250 mg |
| Sugar | 11 g |
Nutrition values are estimates and are not a substitute for professional dietary advice. Using low-sodium broth lowers the sodium considerably.
Health Benefits of French Onion Soup
Antioxidant-Rich Onions
Onions contain quercetin and other plant compounds with antioxidant properties.
Gut-Friendly Fiber
Onions contain prebiotic fibers that feed beneficial gut bacteria.
Protein & Calcium
Gruyère and Swiss cheese provide protein and calcium, which support muscles and bones.
Warm & Hydrating
A bowl of broth-based soup is filling and comforting, which makes it a good starter or light meal on a cold day.
What to Avoid
Preparation Mistakes
- Don’t rush the onions. High heat scorches them and makes the soup bitter. Medium heat and patience give sweetness.
- Don’t skip toasting the bread. Untoasted bread turns soggy and sinks. Toasted bread holds the cheese on top.
- Don’t use bowls that aren’t broiler-safe. Regular bowls can crack under the broiler. Check for oven-safe markings.
- Don’t overfill the bowls. Leave room so the soup doesn’t bubble over under the broiler.
Storage Mistakes
- Don’t store the soup with the bread and cheese. Keep the toppings separate so they don’t turn mushy.
- Don’t put hot soup straight into the freezer. Cool it first, then freeze in airtight containers.
Dietary Considerations
- Contains Dairy (butter, cheese)
- Contains Gluten (flour, bread)
- Contains Wine (can be omitted)
- High in Sodium
Pro Tips for the Best French Onion Soup
- Go low and slow. Medium heat with regular stirring gives even browning. Scrape the bottom of the pot as the brown bits build up, because that is where the flavor is.
- Use a wide, heavy pot. More surface area means the onions brown instead of steaming.
- Use good broth. The broth is half the soup. Low-sodium beef broth lets you control the salt.
- Add a pinch of sugar if your onions are not very sweet. It helps them brown.
- Shred your own cheese. It melts more smoothly than pre-shredded.
- Make the soup a day ahead. The flavor deepens overnight. Broil the toppings just before serving.
For more techniques like these, browse our cooking tips.
What to Serve With French Onion Soup
Beverages
- Dry white wine (Chardonnay)
- Hot tea
- Sparkling water with lemon
Sides & Mains
- Simple green salad
- Crusty bread
- Grilled cheese
- Smothered fried chicken
When to Serve
- Cold evenings
- Holiday starter
- Sunday supper
- Date night in
Save room for dessert. Try Brenda’s chocolate pie or chocolate fudge pie after a rich bowl of soup.
Ingredient Substitutions
| Ingredient | Swap | Notes |
|---|---|---|
| White wine | Extra beef broth plus 1 teaspoon cider vinegar | Gives acidity without alcohol. |
| Beef broth | Chicken or vegetable broth | Lighter flavor; add an extra splash of Worcestershire for depth. |
| Gruyère | Swiss, provolone, or Swiss with Parmesan | Milder but melts well. |
| French bread | Baguette or sourdough | Any sturdy bread that toasts well. |
| Yellow onions | Sweet onions or a mix with red onions | Sweet onions give a milder, sweeter soup. |
| All-purpose flour | Gluten-free flour blend | Also use gluten-free bread for the topping. |
Storage & Reheating
Refrigerator
Cool the soup, then store in an airtight container for up to 4 days. Keep the bread and cheese separate.
Freezer
Freeze the soup without bread or cheese for up to 3 months. Thaw overnight in the refrigerator.
Reheating
Warm gently on the stove until steaming. Toast fresh bread, top with cheese, and broil just before serving.
Make ahead: the soup base keeps well and tastes better the next day. Prepare it up to step 5, refrigerate, and finish with the broiled toppings when ready to serve.
Frequently Asked Questions
Yellow onions are the classic choice. They caramelize to a deep, balanced sweetness and hold up well in broth. Sweet onions like Vidalia work too but give a milder, sweeter soup, while red onions add a slightly sharper flavor.
Yes. Replace the wine with an equal amount of beef broth and add a teaspoon of apple cider vinegar or a splash of lemon juice at the end for brightness.
Plan on 40 to 45 minutes over medium to medium-low heat, stirring every few minutes. Rushing them over high heat makes them scorch and turn bitter instead of sweet and jammy.
Yes. The soup base tastes even better the next day. Refrigerate it for up to 4 days, or freeze it for up to 3 months without the bread and cheese. Reheat on the stove, then toast the bread and broil with the cheese just before serving.
Gruyère is the traditional choice for its nutty flavor and excellent melt. Swiss, provolone, or a blend of Swiss and Parmesan also work well. Shred the cheese yourself for the best melt.
Toast the bread, top it with cheese, and broil it on a baking sheet until bubbly. Ladle the hot soup into regular bowls and float the cheesy toast on top.
Reader Reviews
More Brenda Gantt’s Recipes
- Vegetable SoupA hearty, garden-style Southern soup
- Potato SoupCreamy, comforting, and simple
- Cabbage SoupA light, savory pot of cabbage
- Chicken SoupClassic comfort for any day
- Brenda Gantt’s Diet SoupA lighter soup for a fresh start
- Smothered Fried ChickenCrispy chicken under rich gravy
- Tomato GravyA Southern favorite over biscuits or rice
- Chocolate PieSilky, old-fashioned dessert
- Chocolate Fudge PieRich, gooey, and easy to make
Explore More
It’s gonna be good, y’all. Make a pot for your next cold evening.
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