The Surprising (and Effective!) Way to Clean Stains off a Glass Baking Dish

published Mar 11, 2022
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Credit: Joe Lingeman/Kitchn

Even though I write about cleaning on a weekly basis, I don’t always have all of the answers. In fact, one of the things I love best about writing is how much I learn from others. One such kitchen cleaning tool I’ve learned about over the years is the pumice stone. Often used to exfoliate and soften skin in the shower, pumice stones are lightweight, porous lava rocks that can also be used to clean tough messes around the house. While you have to be very careful not to use it on finishes or surfaces that could get scratched and permanently damaged, a pumice stone is actually great for cleaning oven exteriors, grate grills, and, yes, glass baking dishes. 

Credit: Joe Lingeman

This last weekend was a perfect time to test out the pumice stone on a glass baking dish. I made an overnight breakfast casserole with cubes of bread, sausage, eggs, and cheese. And, unfortunately, I forgot to grease the bottom of the glass before I poured everything in, resulting in a baked-on mess. Soaking helped … somewhat. I did have a couple of pumice stones nearby, so I decided to try one of them on the dirty dish.

Credit: Shifrah Combiths
The pumice stone in action!

Sure enough, with a few scrubs, the stubborn, baked-on stains lifted easily from the glass. I found myself wondering how much time I could save with this method rather than scrubbing for an extended period of time with scrub pads. While a powdered cleanser and a little elbow grease works eventually, pumice can clean lightning fast. My big tip, though, is to be sure to apply gentle pressure while using and always keep your pumice stone wet. Eventually, the abrasive stone will wear down into a thick pen shape, perfect for cleaning. (Always be sure to spot test first.)

To my surprise, the pumice stone also erased the grease stains that have lingered on my Pyrex dishes for many cycles of washing. I don’t know about you, but I find it thrilling to discover a cleaning tool that pays off with sparkling results. Plus, a pumice stone is totally non-toxic, odorless, and eco-friendly to boot.

Credit: Shifrah Combiths
Ta da! The pumice stone worked wonders on my glass Pyrex dish.

That’s why pumice stones have earned a permanent spot in my collection of prized and effective cleaning tools. If you have tough stains to tackle, like I did, you’ll want to give this surprising cleaner a try.

Have you tried using a pumice stone on your baked-on glass Pyrex dishes? Tell us in the comments below.