Ratatouille lasagne - Good Food Middle East

Ingredients

• 2 tbsp olive oil
• 1 onion , finely chopped
• 2 Morrisons Market Street courgettes , cut into 2cm cubes
• 2 aubergines , cut into 2cm cubes
• 2 red peppers , chopped
• 2 garlic cloves , crushed
• basil leaves , chopped
• 1 tsp dried oregano
• 2 chopped tomatoes
• 250ml vegetable stock
• 300g dried lasagne sheets
• 1 mozzarella , sliced
• 30g grated parmesan (or vegetarian alternative)
• salad and garlic bread , to serve
• 50g butter
• 50g plain flour
• 500ml milk