Sweet and Sour Roasted Red Onions

Caramelized on the outside and super-soft within, these are delicious alongside almost any meat or fish. Serves three to four as a side dish.

• Ready In: 1 hr 30 mins
• Serves: 3

Ingredients

• 1  lb red onion
• 2  tablespoons olive oil
• 1  stick celery, finely chopped
• 1  garlic clove, finely chopped
• 1  teaspoon rosemary, picked and finely chopped
• 1  tablespoon tomato paste
• 3  tablespoons cider vinegar
• 3  tablespoons light brown sugar
•  salt and black pepper

Directions

1. Preheat the oven to 190C/375°F Peel the onions and cut them in half from root to tip. Put into a small oven dish, so they fit snugly in one layer.
2. Heat the olive oil in a small saucepan over a medium heat and add the celery and garlic. Fry gently for about 10 minutes, until soft. Remove from the heat, add the rosemary, tomato paste, vinegar and sugar, and stir so the sugar dissolves.
3. Season generously, then pour over the onions and mix well. Roast for an hour, until soft and caramelized, stirring halfway through. Serve hot, warm or cold.