a) Boil a full kettle of water.

b) Chop the potatoes into 2cm chunks (peel first if you prefer).

c) Pour the boiling water into a large saucepan with 1/2 tsp salt.

d) Add the potatoes to the pan and cook until you can easily slip a knife through, 15-18 mins.

a) While the potatoes cook, heat a drizzle of oil in a large frying pan on high heat.

b) Once hot, add the diced chicken and mushrooms to the pan. Season with salt and pepper.

c) Fry until the chicken is golden brown on the outside and cooked through, 8-10 mins. IMPORTANT: Wash your hands and equipment after handling raw chicken and its packaging. It's cooked when no longer pink in the middle.

a) Meanwhile, peel and grate the garlic (or use a garlic press).

a) Once the chicken and mushrooms are cooked through, add the garlic to the pan. Stir-fry for 1 min.

b) Add the chicken stock paste and water for the sauce (see pantry for amount) to the pan, then bring to the boil and reduce by half, 2-3 mins.

c) Stir through the creme fraiche and mustard until everything's piping hot, 2-3 mins.

a) Meanwhile, once the potatoes are cooked, drain in a colander and return to the pan, off the heat.

b) Add a knob of butter and a splash of milk (if you have any). Mash until smooth.

c) Season with salt and pepper. Cover with a lid to keep warm.

a) When everything's ready, spoon the mash into your bowls.

b) Share out the creamy mustard chicken alongside.

Enjoy!