Baked red kumara with caramelised onion and ham

4 red kumara, scrubbed
1 tbsp olive oil
2 medium brown onions, peeled and finely sliced
1 tbsp whole grain mustard
2/3 cup water
2 tbsp balsamic vinegar
2 tbsp brown sugar
4 slices lean ham
light sour cream
basil leaves

Scrub the kumara and microwave on 100% power for 3 minutes each (12 minutes for four kumara) or until soft. Alternatively bake at 200°C for 35 - 45 minutes. Place the oil, onion, mustard and water in a saucepan and simmer gently for 15-20 minutes. Add the vinegar, sugar and stir well. Split the cooked kumara in half and top with the onion mixture and ham. Garnish with sour cream and basil.

Serves 4.