. Bring to a boil over high heat. Cook until the potatoes are fork-tender, which will take about 15-20 minutes.
Drain & Arrange: Drain the potatoes well and let them sit in the colander for a minute or two to dry out slightly. Arrange the cooked potatoes on the prepared baking sheet, ensuring there is some space between each one.
Smash Potatoes: Use a potato masher, the bottom of a sturdy glass, or a fork to gently press down on each potato until it is roughly smashed flat, but still holds together in one piece.
Season & Drizzle: Drizzle the olive oil evenly over the smashed potatoes. Sprinkle generously with salt and pepper to taste.
Roast: Roast in the preheated oven for 30-40 minutes, or until the potatoes are beautifully crispy and golden brown.
Add Parmesan (Optional): If you are using Parmesan cheese, sprinkle it over the potatoes during the last 5 minutes of roasting.
Serve: Remove the potatoes from the oven. Taste for seasoning and add additional salt if necessary. Serve hot.
