Place the potatoes into a large pot and fill it with cold water. Place the pot over high heat and bring to a bubble. Turn the heat down to medium to cook the potatoes until tender but not falling apart, about 10 minutes. Once the potatoes are cooked, drain them and place them back into the pot they were cooked in to dry out for a few minutes.
Place a large, cast iron pan over medium-high heat with 1 tablespoon of butter and 1 turn of the pan of EVOO, about 1 tablespoon. Add the potatoes to the pan and cook them until they start to get golden brown, 4-5 minutes.