Step 1: Pre-Heat your oven to a medium high heat.
Step 3: Butterfly your chicken breasts (cut them nearly in half but not quite) open it out and it techinally should have a sort of butterfly look to it!
Step 5: rub butter over the inside of the chicken and load it up with garlic, grated cheese and onion, once filled fold the chicken breast back over on itself.
Step 7: do this for all 4 chicken breasts.
Step 9: poke a skewer through each kiev in order to seal them up and stop you losing your filling.
Step 11: beat your egg in a bowl.
Step 13: once sealed place on a baking tray and brush with egg mixture.
Step 15: in a bowl crush up your crisps and add as much cream chesses as you like, mix it together slowly so as not to crush the crisps to crumbs.
Step 17: smear the cheesy crisp mixture on the chicken breasts and brush with egg again.
Step 19: place in the oven on a foil covered baking tray and cook for around 35-40 minutes until chicken is cooked through and the crisp coating nicely browned.