Lamb & Mushroom Blended Shepherd's Pie

Ingredients

• 350g mushrooms, finely diced
• 150g lamb mince
• 1 tbsp olive oil
• 1 onion, diced
• 1 carrot, peeled and finely diced
• 1 celery stalk, finely diced
• 2 cloves garlic, crushed
• ¼ cup tomato paste
• ¼ cup plain flour
• ½ cup red wine
• 2 cups beef stock
• 2 tbsp Worcestershire sauce
• 1 cup frozen peas and corn
• 1 tsp dried thyme
• 1 sprig rosemary, finely chopped
• ½ cup milk
• 30g butter
• 3 sprigs parsley, chopped
• 1 tbsp butter, melted