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ContinentalNon-veg

French Onion Soup

Caramelised onions in beef broth with bubbling cheese toast.

80 min4 servesmedium

French Onion Soup is a classic protein-forward Continental recipe built around a handful of pantry staples. It serves 4 and comes together in roughly 80 minutes from prep to plate. It sits in the comfortable middle ground: nothing intimidating, but it rewards a little patience during the roughly 80 minutes of active cooking. The method leans on slow simmering, which is what gives the finished dish its signature texture and depth.

The headline ingredients here are onion, butter and flour. Spend a little time choosing well: fresher, more carefully-sourced versions of these will lift the whole plate, while every other element is mostly there to support them.

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Nutrition · per servingestimated

225

kcal

14g

Protein

20g

Carbs

10g

Fat

soupcomfortclassic

Ingredients

  • onion6 large
  • butter4 tbsp
  • flour2 tbsp
  • beef stock6 cups
  • white wine0.5 cup
  • baguette1
  • gruyere200 g
  • thyme4 sprigs
  • saltstaple

Method

  1. 1
    Step 1 ~20 min

    Slowly caramelise sliced onions in butter for 40 minutes till deep brown.

  2. 2
    Step 2 ~20 min

    Sprinkle in flour; cook 1 minute.

  3. 3
    Step 3 ~20 min

    Deglaze with wine; add stock and thyme; simmer 20 minutes.

  4. 4
    Step 4 ~20 min

    Ladle into bowls; top with toast and gruyere; broil till bubbling.

Per-step times are approximate and based on the total cook time of 80 minutes.

Pro tips & common mistakes

  • Keep the pot at a lazy simmer, not a hard boil. Bubbles should break the surface slowly; aggressive boiling tightens proteins and muddies the sauce.
  • This is a longer cook, so taste as you go and adjust salt in small increments. It is much easier to season up at the end than to rescue a dish that has been over-salted early.
  • Taste a small spoonful just before serving and adjust salt, acid (lemon or vinegar) and heat — that final balance check is what separates a good home cook from a great one.

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Frequently asked questions

How long does French Onion Soup take to cook?
From prep to plate, French Onion Soup takes about 80 minutes and yields 4 servings. About a third of that is hands-on; the rest is the cooking itself.
Is French Onion Soup vegetarian?
No — this version contains non-vegetarian ingredients (onion, butter, flour). For a vegetarian take, replace the main protein with paneer, halloumi, mushrooms or extra-firm tofu and keep the same spices.
What are the key ingredients in French Onion Soup?
The headline ingredients are onion, butter, flour. The rest of the list is supporting cast — spices, aromatics and pantry staples — that round out the flavour rather than carry it.
Can I scale this recipe up or down?
Yes. The ingredient quantities scale linearly: halve for 2 servings or double for 8. Cooking times stay roughly the same, except for anything that depends on pan surface area — if you double a stir-fry, cook it in two batches rather than crowding the pan.
How should I store the leftovers?
Let leftovers cool to room temperature, then refrigerate in an airtight container for up to 3 days. Reheat gently — low heat on the stove with a splash of water, or short bursts in the microwave covered with a damp paper towel so it does not dry out.
Can I freeze French Onion Soup?
Yes. Cool fully, portion into freezer-safe containers and freeze for up to 1 month. Defrost overnight in the fridge and reheat gently; you may need a splash of water or stock to bring the sauce back to its original consistency.
What should I serve with French Onion Soup?
French Onion Soup pairs naturally with classic continental sides — a simple grain, a fresh salad, or a light pickle to cut through richness. Aim for something that contrasts the main dish in texture or temperature rather than echoing it.
What if I do not have one of the main ingredients?
Most ingredients in this recipe have sensible swaps. Match like-for-like by texture and cooking time and you will land somewhere close to the original.