Preheat oven to 450F
Grab your potatoes and slice off the bottoms so they can lie flat without rolling around. Grab two wooden spoons and place them along the sides of the potato. The spoons stop you from slicing the full way through the potato. Using a sharp knife, slice the potatoes every 1/8 inches down the length of the potato. You should be able to get around 15-20 slices. Slice all 4 potatoes and place them on a baking sheet.
Next up, into a small pot add the butter, olive oil, garlic, parmesan, rosemary, garlic powder, salt, and pepper. Place over medium heat until butter is melted. Enjoy that smell!
Using a pastry brush, paper towel, or spoon, coat potatoes with melted butter mixture. Make sure to get butter into all of the slices for maximum crispiness.
Pop the try of buttered potatoes into the oven and roast for 55-65 minutes. Be sure baste potatoes with the butter every 20 minutes to help with the browning.
Once the potatoes are brown and crispy, remove from the oven and top with parmesan, fresh rosemary, and black pepper. Enjoy!
