Place potatoes in a pot of boiling water and cook until you can pierce them easily with a fork.

Remove from the water and let them dry. 

Transfer to a greased baking pan and smash them with the bottom of a glass or with a fork, about 3/4 of the way down. Brush with melted butter or olive oil and sprinkle with sea salt and either garlic powder.

Place in the oven and turn on the broiler. Cook until desired crispiness.

Once they come out, sprinkle parmesan cheese or other fresh herbs if you'd like.