Crispy Parmesan Rosemary Potato Slices That Will Steal the Show at Any Gathering
There are some recipes that quietly become legend in a family, passed down not through cookbooks but through crowded kitchens and whispered requests at the end of a dinner party. These crispy Parmesan and rosemary potato slices are exactly that kind of recipe. Golden on the edges, tender in the center, and fragrant with fresh herbs and nutty cheese, they are the kind of appetizer or side dish that empties the platter before you even sit down.
Simple enough for a weeknight but impressive enough for company, these oven-baked potato rounds have a satisfying crunch that rivals anything fried. The secret is in the thin slicing, the generous coating of Parmesan, and that final blast of heat that transforms humble potatoes into something truly craveable. Once you make them, do not be surprised when everyone in the room starts asking you how you did it.
Ingredients
- 4 medium Yukon Gold or russet potatoes, scrubbed clean
- 3 tablespoons olive oil
- 3/4 cup finely grated Parmesan cheese
- 1 teaspoon garlic powder
- 1 teaspoon onion powder
- 1/2 teaspoon freshly ground black pepper
- 1/2 teaspoon sea salt, plus more to taste
- 1/2 teaspoon smoked paprika (optional, for extra depth)
- Several fresh rosemary sprigs, for topping
- Cooking spray or additional olive oil for the pan
Method
- Preheat your oven to 425 degrees Fahrenheit (220 degrees Celsius). Line a large rimmed baking sheet with parchment paper and lightly grease it with cooking spray or a drizzle of olive oil.
- Using a sharp knife or a mandoline slicer, cut the potatoes into thin rounds, approximately 1/8 to 1/4 inch thick. Try to keep the slices as uniform as possible so they cook evenly.
- Place the potato slices in a large bowl. Drizzle with the olive oil and toss well to coat every slice thoroughly.
- In a small bowl, mix together the Parmesan cheese, garlic powder, onion powder, black pepper, salt, and smoked paprika if using.
- Sprinkle the Parmesan mixture over the potato slices and toss gently until each round is well coated on both sides.
- Arrange the slices in a single layer on the prepared baking sheet, making sure they do not overlap too much. You may need two baking sheets depending on the size of your potatoes.
- Bake for 20 to 25 minutes, flipping the slices once halfway through, until they are deeply golden and crispy around the edges.
- Remove from the oven and immediately tuck small sprigs of fresh rosemary onto the top of each slice while they are still hot so the herb gently warms and releases its fragrance.
- Transfer to a serving platter and finish with a light pinch of flaky sea salt if desired. Serve immediately while still crispy and hot.
Tips for the Best Results
Yukon Gold potatoes tend to have a naturally buttery flavor that pairs beautifully with Parmesan, but russet potatoes will give you a slightly crispier edge. If you have time, soak the sliced potatoes in cold water for 20 to 30 minutes before coating them. This draws out excess starch and helps them crisp up even more in the oven. Pat them very dry before tossing in the oil and cheese mixture.
Serving Suggestions
These potato slices shine as a standalone appetizer served with a simple sour cream and chive dip or a roasted garlic aioli on the side. They also work wonderfully as a side dish alongside roasted chicken, grilled fish, or a hearty vegetable soup. For gatherings, arrange them on a large white platter and let the golden color and fresh rosemary do the decorating for you. They are honestly beautiful enough to need nothing else.
Make Ahead and Storage
These are best enjoyed fresh out of the oven when they are at their crispiest. However, if you need to prep ahead, you can slice the potatoes and store them submerged in cold water in the refrigerator for up to 24 hours. Dry them thoroughly before proceeding with the recipe. Leftovers can be reheated in an oven or air fryer at 375 degrees Fahrenheit for about 8 to 10 minutes to bring back some of that original crunch. Avoid the microwave if you want to keep any trace of crispiness alive.
