Half-Moon Ceramic Heat Deflector Plates 2-Pack - White for Big Joe

Our review of these half-moon ceramic heat deflector plates finds them best suited to grill owners who want a simple, reliable way to expand their kamado into a proper indirect oven. The set includes two white cordierite half-moon plates that convert a charcoal kamado into a baking surface, making them particularly useful for baking bread, pizza, cookies and roasting. The single biggest reason to buy is the improved heat circulation and retention that transforms high-heat grills into steady, even cookers for delicate bakes and longer roasts.

Key Features

• 2-Pack Half-Moons: Two plates provide full coverage when arranged as a circle, allowing a uniform indirect cooking surface for larger cooks.
• Cordierite Ceramic: Made of food grade cordierite, the material resists thermal shock and does not impart odors, so baked goods taste clean and natural.
• Improved Heat Circulation: The half-moon shape encourages even heat distribution and retention, which helps achieve consistent results for breads and pizzas.
• Compatible Fit: Designed to work with Kamado Joe Big Joe I, II, III and Big Green Egg style grills, they fit common kamado grill plates and rings without modification.
• Easy Maintenance: After cooling, use a spatula to remove food and soak in warm water then scrub with a brush - no soap or detergent recommended for the stone.

Who It's For

These plates appeal to home cooks and weekend grillers who use kamado-style grills and want to expand from direct searing to low-and-slow roasts and baking. If you frequently make pizza or artisan bread on your Big Joe or similar kamado, the plates give a predictable hot surface and even heat retention.

They are less appropriate for someone who expects a lifetime warranty against cracking or who needs full porcelain-coated plates; a few users reported breakage after repeated use, so grillers planning heavy commercial use should consider thicker or reinforced models.

Pros & Cons

Pros

• Fits common kamado rings and provides a reliable indirect baking surface.
• Food grade cordierite construction avoids odors and is suitable for direct contact with food.
• Two half-moons make it easy to create a round stone for full-coverage baking.
• Good value for the functionality added to a kamado grill.

Cons

• Durability is mixed in customer reports - some plates cracked after a few cooks, so careful handling and gradual temperature changes are advised.

Specifications

Package Includes	Two half-moon ceramic heat deflector plates
Material	Food grade cordierite ceramic
Compatibility	Kamado Joe Big Joe I, II, III and Big Green Egg style grills
Primary Use	Baking bread, pizza, cookies, roasting and indirect cooking
Cleaning	Scrape excess, soak in warm water and scrub; do not use soap

Our Verdict

These half-moon cordierite plates are a practical, affordable way to convert a kamado grill into a baking and indirect cooking oven, offering good heat retention and a clean food-safe surface. They represent strong value for home grillers and bakers who handle them carefully, though users seeking maximum durability should be mindful of the mixed reports about cracking.

Frequently Asked Questions

Will these cover a whole kamado surface?
Two half-moon plates placed together form a near-complete round baking surface suitable for most kamado ring configurations.

Can I use detergent to clean them?
No. After cooling, scrape off debris then soak in warm water and scrub with a brush; avoid soap or detergent.

Are these safe for food contact?
Yes. They are made from food grade cordierite and are free of harmful substances and odors.