This website uses affiliate links, which means I may earn a small commission from your purchase - at no cost to you. Please read my disclosure for more details.

How to Clean Burnt on Grease from Pyrex

If you’ve ever struggled to clean heavily baked on grease from glass pans, here’s how to clean burnt on grease from Pyrexwith one easy trick!

How to Clean Burnt on Grease from Pyrex. GREAT Pyrex Cleaning Tip - no scrubbing required. Plus Learn a Little History about Canadian Made Vintage Pyrex #cleaningpyrex #vintagepyrex #pinkpyrex

How to Clean Burnt Pyrex Dish

I wrote a thorough and extensive guide for how to clean Pyrex – including an answer to the commonly asked question, “how do you get buildup off of a Pyrex dish?”.  Find my Pyrex Cleaning Guide here.  If you’ve tried everything for removing baked on grease from Pyrex, here’s the ultimate Pyrex pan cleaning hack: oven cleaner!  Take a look at a recently thrifted piece of Pyrex I found, which had what looked like years of baked on grease:

How to clean baked on grease from Pyrex

And here’s that same pan now:

How to clean grease from vintage Pyrex

How to Use Oven Cleaner to Clean Pyrex

Here’s how to use oven clean to clean Pyrex and remove that really tough, baked on grease and grime.

  1. Work in a ventilated area (open a window)
  2. Place the Pyrex in a plastic bag
  3. Spray on a liberal application of foaming oven cleaner, targeting the baked on grime
  4. Tie the bag shut
  5. Allow to soak for a few hours
  6. Rinse off the oven cleaner – the baked on grease should have softened and slide right off
  7. Give the Pyrex dish a thorough wash in hot, soapy water to remove oven cleaner

Word of Caution: I heard from one vintage Pyrex collector who said oven cleaner left a hazy film on her Pyrex.  She thinks it might have been because she used extra strength cleaner.  If you’re worried, either spot test on an inconspicuous area, or try experimenting first on pieces that are almost beyond saving before trying this method on a valuable piece of Pyrex (like my favorite piece of all time: Pyrex Blowing Leaves):

My “New” Flamingo Pink Vintage Pyrex

If you’re a Pyrex collector and you’ve been eyeing my new Pyrex pieces, let me tell you about them!  These finds are unusual for me, because I usually only look for and collect turquoise Pyrex.  (See more of my vintage Pyrex collection here).

But after not finding any (nice) Pyrex locally, in what seems like FOREVER, I could not resist these four pieces!  I recently thrifted two brown fridgies (part of the town and country set, I think) and two flamingo bake ware pieces.  The flamingo colour was produced 1952-1956 and, for some reason, this pretty color is not terribly popular among collectors.

Flamingo Pink Pyrex Bake WareVintage Pyrex Collection

But I thought the two flamingo pieces were especially neat because they were made in Canada!  I’m not sure Canadians got a handle on Pyrex manufacturing because we only produced it between 1947-1954 (in Ontario!)  Look at the uneven paint application on the piece below – you can even see the colour sort of fade away and become more sheer.  It’s not dishwasher damage, the application even feels rough there – like they ran out of paint!

Made in Canada Pyrex

Also, the logo was applied backwards (like how it would be on a clear piece), so it’s readable from the top, through the glass, as opposed to flipping it over and reading the bottom.  I’m not sure if this was intentional or not, but it looks a little funny.

When was Pyrex made in Canada?

How to Clean Vintage Pyrex Guide

Hopefully this tip for cleaning burnt on grease from Pyrex helps!  If you’re looking for more tips on how to clean Pyrex, don’t forget to check out this post all about How to Clean Pyrex.  I test a few viral hacks for cleaning Pyrex, share what works and what doesn’t, as well as share my tip for restoring dishwasher dead Pyrex!



  1. Casey @Waffling
    January 19, 2015 / 1:16 pm

    I love the flamingo…possibly more than turquoise! And amazing tip about the baked on grime. I might try that on my stoneware, which is looking dirty

    • Tanya from Dans le Townhouse
      January 19, 2015 / 4:31 pm

      The flamingo is so underrated and I don't know why! It's even older than the turquoise and pink. If you like it, you're in luck. While a turquoise pie plate has sold for nearly $100 on Ebay, I saw a flamingo one linger for $9.99! It's a really rich colour, I think it's quite pretty.Let me know how the oven cleaner works. Just be warned that it's not safe for all surfaces – I felt confident that that it would work on Pyrex because others had tried it. If you have something really trashed (or can pick up a similar piece for a buck, thrifting), test on it first.

  2. cred
    January 20, 2015 / 4:17 pm

    I think the flamingo is beautiful, too.

    • Tanya from Dans le Townhouse
      January 21, 2015 / 6:24 am

      I bought a book on pyrex patterns and when I can't sleep I drool over the colours and patterns. I like these solid ones. There's a pretty lime green too. Must have been so colourful in shops in the 1950s…

  3. Rick
    January 27, 2015 / 6:31 pm

    Great color. Love the cleaning tip. Thank you

    • Tanya from Dans le Townhouse
      January 28, 2015 / 10:55 pm

      Happy to help!

  4. brikhouse2
    January 28, 2015 / 7:28 pm

    I have these little white dishes with brown flowers I got from my mom when I moved out on my own and just realized they are Pyrex but it says Py-o-rex on the bottom. Do you know anything about that? We always used them for pudding growing up, but they kinda look like mini casserole dishes. About 5 inches round in diameter, straight sides with a handle on each side.

    • Tanya from Dans le Townhouse
      January 28, 2015 / 10:04 pm

      Sorry, don't know! Hmmmmm, if you post a photo to IG and tag #pyrexloven or #vintagepyrex you'll find some answers I'm sure. Lots of knowledgable people there. Meanwhile I'll check my book…

    • Unknown
      March 29, 2017 / 6:52 am

      I think the dishes you're talking about are "Py-o-rey" and were made in mexico in 1967. hope this helps.

  5. jllz
    August 20, 2016 / 3:32 am

    You are right about the quality of Canadian Pyrex. I can tell it the moment I pick it up because the paint finish feels grainy. Also all my Canadian pieces have a distinct rim edge where the US pieces are nicely rounded.

    • Tanya from Dans le Lakehouse
      August 20, 2016 / 5:34 pm

      Isn't that so interesting? It's weird that Canadians couldn't produce Pyrex the same…

Dans le Lakehouse is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program. If you click on a link that leads to Amazon, I may earn a commission on qualifying purchases - at no cost to you. Thank you for your support!