
Preheat the oven to 400°F. Grease a 9x13 baking dish and line it with parchment paper. Drizzle ½ tablespoon of olive oil over the parchment and set it aside.
Wash and dry the potatoes, then slice them in half. Place them in a bowl and drizzle the remaining olive oil over them.
In a separate bowl, combine the seasonings: Parmesan cheese, oregano, onion powder, garlic powder, paprika, salt, and pepper. Mix well.
Spread the seasoning mixture evenly over the greased parchment paper. Arrange the potato halves, cut side down, on top of the seasoning.
Bake for 35-40 minutes until the potatoes are tender.
Once done, garnish the cheesy fingerling potatoes with parsley and serve with sour cream. Enjoy!