Prepare consistent pieces
Cut each vegetable into similar sizes. Carrot, broccoli and squash may cook at different rates: separate them on the tray or add faster ones later. Dry washed surfaces before lightly oiling.
Leave room for air
An overloaded tray traps more steam and limits browning. Spread in one layer; doubling a recipe needs space or extra batches. Two trays in the oven may need swapping and adjusted timing.
Check two things
Turn halfway, then test the thickest part. Surface colour and tenderness inside are separate checks. If the top darkens too fast, reduce heat or cover; if water remains, improve spacing rather than automatically adding oil.
Product reference : Interfel — Guides.
