Cumberland Sausage Casserole

Ingredients

• 6-8 Cumberland sausages
• 2 onions (sliced)
• 2 carrots (peeled and sliced)
• 2 celery stalks (chopped)
• 2 cloves garlic (minced)
• 400 g (14 oz) tin of chopped tomatoes
• 250 ml (1 cup) beef or vegetable broth
• 1 tbsp Worcestershire sauce
• 1 tbsp tomato paste
• 1 tsp dried thyme
• Salt and pepper to taste
• 800 g about 1.75 lbs potatoes, thinly sliced
• Olive oil for drizzling
• Fresh parsley (chopped (for garnish, optional))