This is my simple way of roasting potatoes and they turn out pretty tasty.
ranch salad dressing
dry parsley flakes
Cut potatoes in large chunks (I cut mine in 4-6 pieces depending on the size of the potato) and place in baking dish. Add ranch dressing, very little olive oil, salt, pepper and parsley flakes and coat potatoes well. Cover dish with aluminum foil and bake at 385 for about 20 minutes or until they are starting to get tender. Bake an additional 10 minutes without the foil to brown.