Add the potatoes to a large pot and pour in the chicken stock (it should just about cover the potatoes). Squeeze in the juice of 2 lemons, then crumble in the Oxo cube. Give everything a stir, then place on high heat and bring to a boil. Cook until the potatoes are just about knife tender.
Drain and leave to steam dry for 10mins, but preferably until they completely stop steaming and are cool enough to handle. This is important to allow the moisture to escape so they crisp up in the oven. Preheat oven to 390F/200C.
Add the potatoes to a large baking tray and toss with olive oil, oregano, salt, pepper and garlic. Roast in the oven for around 40-45mins, or until deep golden and crispy, tossing a couple of times during.
Meanwhile, add the feta, cream cheese, olive oil and honey to a food processor and blitz until smooth and creamy. You'll need to stop and scrape down the sides a couple of times.
Spread in the base of a large shallow dish, then top with the roast potatoes. Top with parsley and a squeeze of lemon juice (optional) then tuck in and enjoy!