Lentil lasagne - Good Food Middle East

Ingredients

• 1 tbsp olive oil
• 1 onion, chopped
• 1 carrot, chopped
• 1 celery stick, chopped
• 1 garlic clove, crushed
• 2 x 400g cans lentils, drained, rinsed
• 1 tbsp cornflour
• 400g can chopped tomatoes
• 1 tsp mushroom ketchup
• 1 tsp chopped oregano (or 1 tsp dried)
• 1 tsp vegetable stock powder
• 2 cauliflower heads, broken into florets
• 2 tbsp unsweetened soya milk
• pinch of freshly grated nutmeg
• 9 dried egg-free lasagne sheets