Give the pan some space.
A crowded tray traps moisture. Use a second sheet pan if the potatoes cannot sit in a single spaced layer; allow for uneven browning between racks.
Find a recipe Small potatoes with fluffy centers and crisp, craggy edges. Boil them until tender, flatten gently, then let the oven do the rest.

Recipe draft · Reviewed editorially, not kitchen tested by us. Prep: about 10 minutes. Cooking: about 60 minutes. Times vary with equipment and ingredient size. Contains milk from butter. Check packaged ingredients for your requirements.
Scrub the potatoes and place them in a large pot. Cover with cold water by about an inch, salt the water, and bring to a boil. Reduce to a steady simmer and cook for about 15 to 20 minutes after the water boils. Add time for larger potatoes.
A thin knife should slide into the center without resistance. A firm center makes the potato difficult to flatten.
While the potatoes cook, heat a conventional oven to 425°F (220°C). Brush a large rimmed sheet pan with 1 tablespoon of the oil. Drain the potatoes well and let them sit in the colander for 5 minutes so surface moisture can evaporate.
Look for dry skins rather than beads of water. A wet surface delays browning.
Arrange the warm potatoes on the sheet pan with space between them. Press each gently with the flat base of a sturdy glass to about ½ inch (1.3 cm) thick. Mix the remaining oil, melted butter, garlic powder, measured salt and pepper, then brush over the potatoes.
Split skins and uneven edges are welcome. Stop pressing before the potato falls into separate pieces.
Roast on a middle rack for about 30 to 35 minutes, checking toward the end. Rotate the pan if one side browns faster. Let the edges become golden before removing the pan; timing depends on potato thickness and oven performance.
The rough edges should look dry and browned while the thicker middle stays soft.
Let the potatoes rest on the hot pan for a couple of minutes, then lift them with a thin spatula. Add the optional parsley. Serve promptly while the edges are crisp.
If a potato sticks, slide the spatula fully underneath instead of pulling it up by one edge.
A crowded tray traps moisture. Use a second sheet pan if the potatoes cannot sit in a single spaced layer; allow for uneven browning between racks.
The total includes boiling, drying and roasting. These are a relaxed oven side, rather than a 20 minute shortcut.
The crisp edges work alongside the creamy chicken. Start the potatoes first, then cook the chicken while they roast.