Chicken baked with cider & mustard

Name: Chicken baked with cider & mustard
Prep time: 10 min
Cook time: 50 min
Total time: 1 h
Cuisine: European, British
Ingredients: 2 tbsp olive oil; 4 British chicken thighs; 450g chestnut mushrooms, quartered; 1 large onion, finely sliced; 400g charlotte potatoes, cut into slices; 250ml Aspall Premier Cru Cyder; 2 tbsp Dijon mustard; 300g Tenderstem broccoli, trimmed; 2 tbsp single cream; handful flat leaf parsley, leaves roughly chopped