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Corningware Support


Why are there grey marks on my Corningware® casseroles, and how can I remove them?

The grey marks are most likely from metal utensils, which should not be used with CorningWare® dishes. Instead use wooden, nylon or plastic utensils. To loosen food before cleaning, allow the bakeware to soak and then use only plastic or nylon cleaning pads with non-abrasive cleansers. A soft sponge with a non-abrasive cleaner should remove the grey marks.

Why are the new French White® plastic covers preferred over plastic wrap, aluminum foil or plastic containers?

The new gasket-sealing plastic covers feature a unique design to help keep your stored food as fresh as possible. Simply press down the cover and close the steam vent to create a tight seal. Later, simply pop the steam vent to open the seal.

What appliances can Corningware® products be used with?

All CorningWare® bakeware products can be used in conventional, convection and microwave ovens as well as in the refrigerator, freezer and dishwasher.

How can I store my Corningware® products to save space?

The new French White® products are designed to nest within each other. How you stack yours depends on the pieces you own and the size of your cabinets. The new, contemporary glass lids are specially designed to rest on their handles, making stacking easy as well as helping to protect your table from condensation. The handles of the nonstick roasting racks are removable for easy cleaning, and the arms fold underneath. NOTE: Products that are the same size and shape should NOT be nested inside each other as they may get stuck and then be damaged when separated.

What is Pyroceram?

Pyroceram was produced in the 1950’s by Corning Glass during their extensive research on photosensitive glass. S.Donlad Stookey discovered this material accidentally when an overheated piece of glass turned out to be too tough to break when dropped. This novel material has been classified by NASA as a glass-ceramic and is produced by controlled crystallisation. Pyroceram 9606 was certified as a reference standard after being used informally for over 30 years in high temperature applications that demand working at temperatures of about 1000c.

Use & Care Instructions

Use & Care Instructions


  • CORNINGWARE cookware is extremely versatile. It can be taken straight from the freezer to the oven, microwave,gas or electric stovetop (not suitable for Induction cooktops) and then to the dishwasher or sink – no matter how hot or cold the dish is.
  • CORNINGWARE cookware is easy to clean and does not stain or retain odours as will metal and plastic cookware. Stovetop use
  • CORNINGWARE cookware retains heat so well, you can use a lower heat setting than normal and save on energy.This also helps prevent sticking or burning of food.
  • For best results, prepare food which are stirred or have liquid as a cooking medium.
  • CORNINGWARE cookware can be used on gas, electric and ceramic stovetops (not suitable for Induction stove tops).
  • Oven and griller use
  • CorningWare® bakeware is ideal for all oven types – conventional, convection and toaster ovens.
  • Glass cover must not be placed under the grill or in the toaster oven.Microwave use
  • CorningWare® bakeware is perfect for the microwave.
  • Use pot holders as the dish may become hot during cooking.Refrigerator and freezer use
  • CorningWare® bakeware can go from the refrigerator or freezer directly to the stovetop, oven or microwave.


  • Use only wooden, nylon or plastic utensils. Metal utensils can scratch or leave grey marks on the CorningWare® bakeware surface.
  • Use only plastic or nylon cleaning pads and non-abrasive cleaners such as CorningWare® Cleaner & Conditioner.
  • To loosen cooked-on food, soak cookware in warm soapy water. Cool the glass cover before soaking.


  • Store dishes separately if space permits.
  • Do not nest, as direct glass to glass contact can damage the bakeware. Stack carefully by inverting the lids and stacking smaller pieces on top. If stacking is not possible due to limited space, nest the cookware by placing a cloth between each piece.


  • All glass and glass-ceramic materials are breakable, so please take care in use.
  • Do not use CorningWare® bakeware for deep fat frying.
  • Do not use for popping corn, caramelising sugar or making candy.
  • Use pot holders when handling hot CorningWare® bakeware in the microwave oven.
  • Do not heat empty CorningWare® bakeware in the microwave oven.
  • DO NOT use or repair chipped, cracked or broken items.
  • Place hot CorningWare® bakeware on a placemat as retained heat could damage bench surfaces.
  • Do not use the glass cover under a griller or in a toaster oven.
  • Do not place a hot glass cover on a cold or wet surface, or handle with a wet cloth



  • 2-Year Warranty – Glass lid
  • Free replacement of any glass cover that breaks from heat within two years from date of purchase.
  • 10-Year Warranty – CorningWare® Pyroceram
  • Limited 1-Year Warranty - CorningWare® Stoneware