FRENCH ONION SLOW CARAMELISED SAVOURY SOUP
French Onion Slow Caramelised Savoury Soup is a modern twist on a classic, featuring deeply caramelised onions, savoury broth and a touch of balsamic for balance. This single-serve version streamlines the timeless recipe into one pot, ensuring maximum flavour with minimal fuss. The onions melt into golden sweetness, enriched by the tangy balsamic vinegar and enhanced by a light broth base. Choose beef broth for traditional richness or vegetable broth for a lighter and vegetarian-friendly option. This soup is made with the optional toasted bread topping, which delivers that signature French onion experience, which is chewy, comforting and utterly soul-satisfying. Suitable for lunch, light dinner or starter, this French Onion Slow Caramelised Savoury Soup offers elegance and warmth in under 30 minutes. It’s perfect on cooler days or anytime you need a quick and gourmet-style bowl without the effort.
RECIPE CATEGORY
Lunch
SERVING SIZE
1
CUISINE
French
PREPARATION/TECHNIQUES
One-Pot Wonders
OCCASION/HOLIDAY
Winter
SPECIAL CONSIDERATION/DIETARY CONCERNS
Quick & Easy
DISH TYPE
Soup / Stew
INGREDIENTS
The following ingredients are required for the preparation of French Onion Slow Caramelised Savoury Soup:
- 70 grams | 2.47 ounces | ½ cup sliced onions
- 240 millilitres | 8.12 fluid ounces | 1 cup beef or vegetable broth
- 5 millilitres | 0.17 fluid ounces | 1 teaspoon balsamic vinegar
- 15 grams | 0.53 ounces | ½ slice of toasted bread (optional topping)
- 5 millilitres | 0.17 fluid ounces | 1 teaspoon olive oil
FULL NUTRITIONAL INFORMATION
- Calories: 126.0 kilocalories
- Protein: 2.9 grams
- Fat: 5.8 grams
- Saturated Fat: 0.8 grams
- Carbohydrate: 15.9 grams
- Sugars: 5.0 grams
- Fibre: 1.6 grams
- Sodium: 478 milligrams
PREPARATION
These steps are followed for the preparation of French Onion Slow Caramelised Savoury Soup:
- Sauté Onions: Set Instant Pot to Sauté mode. Heat olive oil, add sliced onions and cook 5 to 7 minutes until softened and golden.
- Caramelise Lightly: Continue sautéing for 3 to 4 minutes until onions start to caramelise, stirring frequently to avoid burning.
- Add Broth And Balsamic: Pour in broth and add balsamic vinegar, stirring to mix.
- Pressure Cook Briefly: Cancel Sauté, seal lid and cook on High Pressure for 5
- Release And Serve: Quick‑release pressure, stir gently and then optionally float toasted bread on top before serving.
PREPARATION TIME
5 minutes
COOKING TIME
15 minutes
TIPS
Here are some helpful tips for French Onion Slow Caramelised Savoury Soup:
- Slice Onions Thinly: Even slices ensure consistent cooking and caramelisation.
- Stir Often: During sautéing, frequent stirring prevents scorching and keeps onions tender.
- Use Low-Sodium Broth: Gives better flavour control and lets caramelised onions shine.
- Optional Topping: Toast bread until crisp, then float on top just before serving for added texture.
- Deglaze The Pot: Scrape up the fond on the base when adding broth, so it contains magic flavour.
VARIATIONS
- Vegetarian Option: Use vegetable broth and add 1 teaspoon soy sauce for extra richness
- Cheesy Finish: Top with shredded Gruyère or Swiss cheese and broil briefly in a small oven-safe bowl (Instant Pot off).
- Herbal Twist: Stir in a sprig of thyme or a bay leaf during sauté, removing before pressure cooking.
- Garlic Boost: Add 1 garlic clove, mince it during sauté for aromatic depth.
- Mushroom Mix: Toss in ¼ cup sliced mushrooms with onions for earthy umami notes.
PREPPING AND STORAGE
- Refrigeration: Store cooled soup in a sealed container for up to 3 Reheat on the stovetop over low heat, stirring frequently.
- Freezing: Transfer to freezer-safe container, leaving room for expansion, so freeze up to 2 Thaw overnight before reheating.
- Reheat Carefully: Warm gently because high heat may toughen onions or separate the broth.
- Batch Preparation: Double the recipe and freeze individual portions for quick future meals.
