50g Butter
1 tbs Olive Oil
1 kg Onion
1 tsp Sugar
4 sliced Garlic Clove
2 tbs Plain Flour
250ml Dry White Wine
1L Beef Stock
4 sliced Bread
140g Gruyère
1- Melt the butter with the oil in a large heavy-based pan.
2- Add the onions and fry with the lid on for 10 mins until soft.
3- Sprinkle in the sugar and cook for 20 mins more, stirring frequently, until caramelised.
4- The onions should be really golden, full of flavour and soft when pinched between your fingers.
5- Take care towards the end to ensure that they don’t burn.
6- Add the garlic for the final few mins of the onions’ cooking time, then sprinkle in the flour and stir well.
7- Increase the heat and keep stirring as you gradually add the wine, followed by the hot stock.
8- Cover and simmer for 15-20 mins.
9- To serve, turn on the grill, and toast the bread.
10- Ladle the soup into heatproof bowls.
11- Put a slice or two of toast on top of the bowls of soup, and pile on the cheese.
12- Grill until melted.
13- Alternatively, you can complete the toasts under the grill, then serve them on top.