
Step 1 · Par-Cook the Potatoes
Peel and par-cook the russet potatoes in cold water for 6 to 8 minutes until firm. Drain and cool completely.
Step 2 · Chill the Potatoes
Chill the potatoes in the fridge for 1 to 2 hours or overnight.
Step 3 · Grate the Potatoes
Grate the cooled potatoes using a box grater or food processor.
Step 4 · Remove Moisture
Squeeze out excess moisture from the grated potatoes using a tea towel or cheesecloth.
Step 5 · Mix Ingredients
In a large bowl, combine the grated potatoes with oil, cornstarch, fine salt, onion powder, garlic powder, and black pepper. Mix gently. If using, fold in the grated Parmesan and onion.
Step 6 · Shape the Patties
Shape the mixture into 12 patties, about 1.5 cm thick, and place on a parchment-lined baking sheet.
Step 7 · Freeze the Patties
Freeze the patties for 30 to 45 minutes to firm up.
Step 8 · Bake the Patties
Preheat the oven to 425°F / 220°C. Bake the patties for 20 minutes, flip, then bake for another 15 to 20 minutes until golden and crisp.
Step 9 · Set the Crust
Let the patties sit for 3 to 5 minutes after baking to set the crust.