Cut the chicken breasts in half lengthways to make 4 thinner fillets.
Season the flour with salt & pepper, then coat each piece of chicken.
Heat the cooking oil and butter in a large frying pan over a medium to high heat. Pan fry the chicken until it is golden brown on both sides.
Remove the chicken from the pan and set it aside. Now turn the heat down to a medium heat, add the diced onion into the same pan and cook for about 5 minutes until it starts to soften.
Add the garlic and cook for a further minute.
Pour in the chicken stock, add the honey and mustard. Bring it to the boil.
Pour in the cream and get the chicken back into the pan. Give it a stir.
Cook it for a few minutes, stirring occasionally until the sauce thickens.
Add in the chopped parsley, then taste for seasoning.
Dish it up and enjoy!