Polenta and chard chips with rich tomato sauce

Method

1. Cut the stalks off the chard leaves, chop them into small pieces and set aside. Chop the leaves into bite-size pieces and set aside separately.
2. In a large, deep saucepan, melt the butter, then fry the onion with a pinch of salt over a medium heat. Add the chard stalks and cook for 5-10 minutes until tender, then add the leaves and sauté for 1 minute.
3. Bring 1.4 litres water to the boil in a large saucepan, then stir in the polenta. Whisk with a balloon whisk until thickened, then stir in the salt and some pepper. Cover and cook over a low heat for 10-20 minutes until the polenta thickens and begins to come away from the side of the pan as you stir. Transfer to an ovenproof dish and smooth with the back of a spoon. Leave to cool, then chill for a few hours to set – it needs to be completely cold before cutting.
4. To make the tomato sauce, heat the oven to 150°C/130°C fan/gas 2. Toss the tomatoes and onions in the olive oil and balsamic vinegar, then season with salt and pepper and arrange in a baking tray, cut-side up. Roast for 2-2½ hours.
5. Rub some oil on the cut sides of the garlic halves, then wrap in foil and roast for 1 hour or until soft.
6. Scrape the tomatoes and onions into a blender, squeeze out the soft garlic from the skin and blend until smooth. Taste and season; add cayenne pepper if you want spice, honey if you want sweetness.
7. Turn the oven up to 200°C/180°C fan/gas 6. Cut the polenta into chips about 1.5cm thick and 8cm long. Put on a baking sheet and brush all over with rapeseed oil. Roast for 1 hour or until golden, carefully turning after 30 minutes. Warm the sauce to serve with the chips.

Recipe is from Zita Steyn’s cookbook Good Better Green, available from Quadrille for £16.99.