Mustard & sage chicken with celeriac mash - Good Food Middle East

Ingredients

• 1 celeriac, peeled and cut into chunks
• 3 chicken breasts, skinless
• 1 tbsp English mustard powder
• 2 tsp olive oil
• 2 garlic cloves, crushed
• 8 sage leaves, chopped
• 100g low-fat crème fraîche, plus 2 tbsp for the mash
• 1 low-sodium chicken stock cube
• 2 tbsp wholegrain mustard
• 275g cooked green veg, such as thin-stemmed broccoli, peas or Savoy cabbage, to serve