| Sheet | Method | Note |
|---|---|---|
| Aluminum / bare steel | Baking-soda + peroxide paste; or oxalic cleanser | Rub with the grain; rinse |
| Nonstick / coated | Soft sponge and a soak only | No steel wool or oven cleaner |
| Brown patina | Leave it — harmless seasoning | Don't scour it off |
| Finish | Dry fully | Bare steel rusts if left wet |
How to Clean Baking Sheets
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Make a paste of baking soda and a little hydrogen peroxide (or dish soap), spread it on the baked-on grease, let it sit, then scrub — this lifts sticky, burnt-on residue that soap alone can't. The even brown patina on an aluminum sheet is harmless seasoning, so leave it; only clean off the sticky, uneven grime.