Can You Use Cast Iron on a Glass Cooktop? - Gaslandchef

Can You Use Cast Iron on a Glass Cooktop?

When it comes to cookware, cast iron is cherished for its durability, heat retention, and versatility. However, many people wonder if it’s safe to use cast iron on a glass cooktop. The short answer is yes, but there are important considerations to keep in mind to avoid damaging your cooktop. In this blog, we’ll explore how to safely use cast iron on a glass cooktop and offer tips for maintaining both your cookware and cooktop.

Benefits of Cast Iron Cookware

Before diving into the specifics, let’s quickly highlight why cast iron is so popular:

  • Durability: Cast iron can last a lifetime if properly cared for.
  • Heat Retention: It maintains and evenly distributes heat, making it excellent for slow cooking and searing.
  • Versatility: Suitable for a variety of cooking methods, including stovetop, oven, and even campfires.

Using Cast Iron on a Glass Cooktop: Safety Tips

1. Lift, Don’t Slide

One of the most crucial rules when using cast iron on a glass cooktop is to always lift the pan instead of sliding it. Sliding heavy cast iron can scratch or even crack the glass surface. Be mindful when moving the pan to avoid any damage.

2. Check for Smooth Bottoms

Inspect the bottom of your cast iron cookware. Some cast iron pans have rough or uneven bottoms that can scratch the glass. If the bottom is not smooth, you might want to sand it lightly to remove any burrs or rough spots.

3. Keep It Clean

Ensure that both the glass cooktop and the bottom of the cast iron pan are clean before cooking. Residue or particles trapped between the pan and the cooktop can cause scratches. Wipe both surfaces with a damp cloth to remove any debris.

4. Avoid High Heat

While cast iron is excellent at retaining heat, using it on high heat settings can cause the cooktop to overheat and potentially crack. Start with medium heat and give the cast iron time to heat up gradually.

5. Distribute Weight Evenly

Cast iron is heavy, especially when filled with food. Make sure to place it gently on the cooktop and avoid dropping it. Distributing the weight evenly helps prevent damage to the glass surface.

6. Use a Heat Diffuser

A heat diffuser can be placed between the cast iron pan and the glass cooktop. This accessory helps distribute heat more evenly and reduces the risk of hotspots that can damage the glass.

Cleaning and Maintenance Tips

For the Cooktop

  • Daily Cleaning: After the cooktop has cooled, use a soft cloth or sponge with a mild cleaner specifically designed for glass cooktops. Avoid abrasive cleaners or pads that can scratch the surface.
  • Deep Cleaning: For stubborn stains, apply a cooktop cleaner and use a non-abrasive scrubbing pad. A razor blade scraper can be used for burnt-on residue, but ensure it’s held at a 45-degree angle to avoid scratching.

For Cast Iron

  • Regular Cleaning: Clean cast iron with warm water and a stiff brush. Avoid using soap, which can strip the seasoning. Dry thoroughly to prevent rust.
  • Seasoning: Maintain the seasoning by occasionally applying a thin layer of vegetable oil to the surface and heating it until it smokes. This creates a natural non-stick coating.
  • Storage: Store cast iron in a dry place to prevent rust. If stacking, place a paper towel or cloth between pieces to protect the seasoning.


Using cast iron on a glass cooktop is entirely possible with the right precautions. By following these tips, you can enjoy the benefits of cast iron cooking while keeping your glass cooktop in pristine condition. Lift rather than slide your cookware, keep both surfaces clean, and avoid excessive heat to ensure a long-lasting, scratch-free cooktop. 


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