2 medium onions, chopped
1tbsp olive oil
1tsp brown sugar
1tbsp plain flour
500ml vegetable stock
Heat the oil in a pan and gently fry the onions for about 15 minutes.
Sprinkle over the sugar and heat for 5 more minutes.
Add the plain flour and stir in until the onions are coated.
Gradually add the stock, stirring well. Bubble for 4 - 5 minutes to thicken.
