Wash the potatoes thoroughly and pat them dry. Slice each potato crosswise into thin cuts, being careful not to slice all the way through; leave about ¼ inch at the bottom intact to hold the potato together.
In a small bowl, combine melted butter, minced garlic, chopped rosemary, chopped thyme, paprika, salt, and pepper. Stir until well mixed.
Place the potatoes on a baking sheet lined with parchment paper or foil for easy cleanup.
Using a pastry brush or spoon, generously brush the garlic herb mixture over each potato, ensuring it seeps into the cuts.
Bake in the preheated oven for about 50-60 minutes, basting with the remaining butter mixture halfway through the cooking time for extra flavor.
For the last 10 minutes of baking, sprinkle grated Parmesan cheese over the potatoes if using, allowing it to melt and create a delicious crust.
Once the potatoes are golden brown and crispy on the outside, remove them from the oven and let them cool for a few minutes.
Garnish with chopped parsley before serving for a fresh touch.
Notes
For extra flavor, baste the potatoes halfway through cooking.