How to Clean Baking Sheets (Remove Grease and Dark Stains for Good)

Baking sheets take a beating — grease, burnt sugar, and dark stains build up fast. But with the right method, even the most discolored sheet pan can be restored to near-original condition.

What You'll Need

• Bar Keepers Friend Powder Cleanser — most effective for removing baked-on grease and dark stains
• Amazon Basics Non-Scratch Sponges
• Baking soda and hydrogen peroxide (for the paste method)
• Amazon Basics Silicone Baking Mats — prevent staining in the first place
• Warm water and dish soap

Method 1: Bar Keepers Friend (Fastest)

1. Wet the baking sheet and sprinkle Bar Keepers Friend powder over the stained areas.
2. Let sit for 1–2 minutes.
3. Scrub with the non-scratch sponge in circular motions.
4. Rinse thoroughly. Repeat for heavy buildup.

Method 2: Baking Soda + Hydrogen Peroxide Paste (Deep Clean)

This method is excellent for dark, baked-on grease that has built up over time.

1. Sprinkle a generous layer of baking soda over the entire sheet.
2. Drizzle hydrogen peroxide over the baking soda until it forms a paste.
3. Sprinkle another layer of baking soda on top.
4. Let sit for 2–3 hours (or overnight for heavy staining).
5. Scrub with a non-scratch sponge and rinse. The dark stains should lift away.

Method 3: Baking Soda + White Vinegar Soak

1. Sprinkle baking soda over the sheet, then pour white vinegar over it.
2. Let the fizzing reaction work for 30 minutes.
3. Scrub and rinse. Good for moderate grease buildup.

How to Keep Baking Sheets Clean Longer

The best way to keep baking sheets clean is to line them before every use. Silicone baking mats are reusable, non-stick, and prevent grease and sugar from ever touching the pan surface. They're dishwasher safe and pay for themselves quickly.

Frequently Asked Questions

Can I put baking sheets in the dishwasher?

Aluminum baking sheets will discolor and warp in the dishwasher. Stainless steel sheets are more dishwasher-tolerant, but hand washing preserves them better.

Why do baking sheets turn dark?

Dark discoloration is caused by polymerized grease — oil that has baked onto the surface at high heat repeatedly. It's not harmful, but it does affect heat distribution over time.

Should I replace dark baking sheets?

Not necessarily. Dark sheets actually absorb heat more efficiently and can produce better browning. Replace only if the surface is warped, flaking, or has a non-stick coating that's damaged.