Double Mushroom Lasagne - Mushroom Info

Ingredients

• 3 tbsp olive oil
• 1 onion, finely diced
• 1 carrot, finely grated
• 1 stalk celery, finely diced
• 4 garlic cloves, finely minced
• 500 g brown mushrooms or portabellinis, finely diced
• 1 tbsp dried Italian herbs
• 700 ml tomato passata
• 250 ml lasagne sheets
• 40 g grated parmesan
• 1 l milk
• 75 g butter
• 75 g flour
• Pinch of nutmeg
• Salt and pepper, to taste
• 6 large portobello mushrooms, sliced
• olive oil
• Fresh parsley, to serve