Compared by formula
Compared by formula.
High heat turns the outer leaves to char and the sugars to caramel — the whole argument is how far to push it.
Start here
Nothing picked yet, so this is simply the most-rated version of the 50 we compared. Pick a style above and the answer changes.
from onceuponachef.com
Every dot is one published recipe, placed by its measured formula. The ring is your pick — click any other dot to see that version.
Read from 286 reviews across all 50 recipes. The counts are how many cooks report it — including where they disagree.
Managing surface starch - coating pieces in cornstarch or cornflour before roasting, or soaking raw-cut potatoes in water to leach out excess surface starch - is associated with notably higher exterior crispness, though at least one reviewer found the soak-and-dry approach alone didn't meaningfully improve crispness.
Overcrowding the pan (a single large low-rimmed roasting pan instead of two sheet pans) collapses exterior crispness, while spacing pieces out in a true single layer supports it.
Cooking far longer than directed (twice the stated time) or adding a liquid ingredient like bouillon to the mix collapses exterior crispness even when interior tenderness or flavor still turns out fine - crisping needs correct timing and dry heat, not just more time or added liquid.
Roasting directly on a bare or parchment-lined sheet pan, rather than lining it with foil, is associated with better exterior crispness - foil appears to trap steam that a bare or parchment surface lets escape.
Sprinkling parmesan (with or without breadcrumbs) on the vegetables near the end of roasting, or just before a final toast under the broiler, is associated with a noticeably crisper exterior.
Each one has its own breakdown: formula, cost, time, and how it ranks.