Slow cooker spiced root & lentil casserole - Good Food Middle East

Ingredients

• 2 tbsp olive oil
• 1 onion, finely chopped
• 3 carrots, peeled and cut into 3cm slices
• 500g (about 5 medium) parsnips, peeled and cut into 3cm slices
• 3 garlic cloves, crushed
• 2 tbsp mild curry powder
• 1 tbsp smoked paprika
• 150g red lentils, rinsed
• 600ml hot vegan vegetable stock
• 2 bay leaves
• lemon juice, to serve