Chicken, tomato and mushroom stew with garlic Parmesan mash

Name: Chicken, tomato and mushroom stew with garlic Parmesan mash
Prep time: 10 min
Cook time: 2 h
Total time: 2 h 10 min
Cuisine: European, American
Ingredients: 3 tablespoons olive oil (for sautéing); 1 kg boneless chicken thighs (chopped into bite-sized pieces); 1 red onion (finely chopped); 1 carrot (peeled and chopped); 2 celery sticks (finely chopped); 3 garlic cloves (thinly sliced); 1 bay leaf; 2 sprigs fresh thyme; 250 g mushrooms (halved); 1 tablespoon flour; 1 x 400g (approx 12 oz can chopped tomatoes); 1 cup chicken stock; 1/2 cup cream; salt & pepper to taste; fresh parsley (for garnish); 8 large potatoes; 1 head of garlic; 2 tablespoons butter (adjust amounts to your own preference); 1/2 cup grated Parmesan cheese; 1/2 cup full cream (whole milk)