Spicy Root & Lentil Casserole

Ingredients

• Vegetable or sunflower oil – 2 tablespoons.
• Crushed garlic clove – 2 nos.
• Chopped onion – 1 no.
• Potatoes; peeled and cut into chunks – 700 grams.
• Thickly sized carrot – 4 nos.
• Thickly sized parsnip – 2 nos.
• Curry powder or paste – 2 tablespoons.
• Vegetable stock - 1 liter or 1-3/4 pints.
• Red lentils – 100 grams.
• Roughly chopped fresh coriander – a small bunch.
• Naan bread – to serve.
• Low-fat yogurt – to serve.