Bring a large pot of salted water to a boil. Add the potatoes and cook for 15–20 minutes, or until they are fork-tender.
Drain the potatoes and let them cool slightly so they are easier to handle.
In a small bowl, mix together the olive oil, salt, onion powder, and paprika.
Place the potatoes on a baking sheet.
Using the bottom of a heavy glass cup or mason jar, gently smash each potato until flattened.
Brush each smashed potato generously with the seasoned olive oil mixture.
Bake at 425°F for 30–40 minutes, or until the potatoes are golden brown and crispy.
Sprinkle with parmesan cheese and fresh parsley before serving.
Enjoy!