French Onion Soup
Starters French

French Onion Soup

Deeply caramelised onions in a rich broth, topped with cheesy toast. The tiers climb from a quick stock-cube version to a proper beef-and-wine bistro bowl with a Gruyre crouton.

Serves4
Time45 min
Cost / serving£0.80
Nut-free

Make it your way

Pick a tier — the ingredients, method and cost update instantly.

Budget version

Quick-caramelised onions in stock-cube broth with a Cheddar toast.

Per serving£0.80
Total cost£3.20
Time45 min
French Onion Soup
Servings

Ingredients for 4

  • 4 onions , thinly sliced
  • 30 g butter
  • 1 tbsp vegetable oil
  • 1 tsp plain flour
  • 800 ml beef stock , from cubes
  • 4 slices baguette
  • 60 g Cheddar , grated
  • salt and pepper , to taste

Method

  1. Melt the butter with the oil and cook the onions over a medium heat for 25 minutes, stirring, until deep golden.
  2. Stir in the flour and cook for 1 minute, then pour in the beef stock.
  3. Simmer for 10 minutes and season to taste.
  4. Toast the baguette slices, top with Cheddar and grill until melted.
  5. Ladle the soup into bowls and float a cheese toast on each.

Equipment

The three ways, side by side

Budget
£0.80 / serving · 45 min

Quick-caramelised onions in stock-cube broth with a Cheddar toast.

Better
£1.60 / serving · 1 hr 10 min

Slow-cooked onions deglazed with white wine and topped with Gruyre.

Ultimate
£3.13 / serving · 1 hr 50 min

Butter-caramelised onions, beef and red wine broth, brandy and a Gruyre-Comt gratine.