Cheesy Chicken Meatball Casserole

Ingredients

• 1 tbsp olive oil
• 1 brown onion, diced
• 2 cloves garlic, minced
• 1 carrot, peeled and finely diced
• ½ red capsicum, diced
• 50 g button mushrooms, diced
• 1 kg chicken mince
• 1 egg
• 2 tbsp Italian parsley, finely chopped, divided
• 1 tbsp basil leaves, finely chopped
• ½ tsp freshly ground black pepper
• Pinch of salt
• 2 x 400 g cans Italian diced tomatoes
• ¾ cup grated mozzarella
• ½ cup grated parmesan