Next level French onion soup recipe | Good Food

Ingredients

• 75g butter
• 2kg onions halved and sliced as thinly as possible
• bunch of thyme
• 3 bay leaves
• 1 tsp yeast extract
• 1 tbsp plain flour
• 100ml white wine
• 1 litre fresh beef stock
• 2 tbsp olive oil
• ½ stale baguette sliced at an angle
• ½ garlic clove
• 150g gruyère finely grated