Mix the oil, salt, pepper, and oregano in a bowl and blend nicely. Place the hen in a deep container and pour the marinade on the hen. Rub the marinade within the hen. Let marinade for two hours or in a single day. Warmth an out of doors grill on medium warmth. Take away the hen from the fridge and let heat up for 20 to 30 minutes.
Cook dinner the hen about 7 minutes per facet. Take off the grill and place on a slicing board. Make a horizontal lower into the center of the breast. Make the lower nearly right through however don’t lower right through.
In the meantime, lower the cheese in thick, roughly ¼-inch, slices lengthwise. Take the cheese and insert into the hen cavity you created with the lower. Place on a baking tray and cook dinner in a 325 levels F oven for 15 minutes. This could present soften on the cheese and cook dinner the hen right through.
Serve and revel in!