French Onion Soup - cooking recipe

Ingredients

4 tbsp (1/2 stick) butter
1 tbsp olive oil
2 1/4 lbs onions, thinly sliced
1 tsp brown sugar
2 tbsp flour
4 cups reduced sodium beef stock
1/2 cup white wine
2 stems fresh thyme, leaves picked, plus additional leaves, to serve
12 slices French bread
1/2 cup grated Gruyere or Swiss cheese

Preparation

Heat butter and oil in a large saucepan on medium heat. Add onion; cook, stirring, for 10 mins or until soft. Add sugar; cook, stirring occasionally, for 8-10 mins or until onion is golden.
Add flour; cook, stirring, for 1-2 mins. Remove from heat. Gradually stir in stock, wine and thyme, until combined. Return to heat and cook, stirring, until mixture boils and thickens. Reduce heat to low; simmer, covered, for 4-5 mins. Season to taste.
Meanwhile, preheat broiler. Place bread on a foil-lined baking pan. Broil for 1-2 mins or until golden. Turn and sprinkle with cheese. Broil for a further 1-2 mins or until melted. Serve soup topped with croutons and additional thyme leaves.