Ingredients
Method
Parboil & Steam-Dry
- Place potatoes in a large pot, cover with cold water by 1 inch, and add 1 tbsp kosher salt. Bring to a boil and cook for 18-20 minutes until fork-tender.
- Drain in a colander and let steam-dry completely for 5-7 minutes. Moisture evaporation is critical for maximum crunch.
Smash, Roast & Glaze
- Preheat oven to 425°F (220°C). Drizzle 2 tbsp olive oil across a large baking sheet. Arrange potatoes and gently crush flat to 1/2-inch thickness using a heavy glass bottom.
- Drizzle remaining 1 tbsp olive oil, season with pepper, and roast for 25 minutes until bottoms are deeply golden.
- Melt butter with minced garlic and rosemary over low heat. Brush generously over smashed potatoes, top with grated Parmesan, and roast 10-12 minutes more until blisteringly crisp. Garnish with parsley and flaky sea salt.