Unicook Extra Large Pizza Stone 18 in Square - Even, Crispy Crust

Our review of the Unicook Extra Large Pizza Stone 18 in Square finds it best suited for home cooks and grill owners who regularly bake large pizzas or multiple loaves at once; the single biggest reason to buy is its thick cordierite construction that absorbs and distributes heat evenly to produce a light, crispy crust. This review looks at how it performs in an oven and on a grill, how easy it is to care for, and whether the size and durability match expectations for frequent use.

Key Features

• Cordierite construction: Durable material resists thermal shock so the stone can handle high baking temperatures and rapid heat changes without cracking.
• High heat tolerance: Rated to 1,450F (787C) so it can be used at very high oven or grill temperatures to achieve quick, even browning.
• Large 18 in square surface: Offers enough room to bake a single large pizza or several smaller pizzas and multiple bread loaves at once for gatherings.
• Thicker profile: Extra thickness helps the stone absorb and distribute heat quickly for consistent baking results and a crisp crust.
• Low maintenance cleaning: Designed to be hand washed with warm water only, avoiding soap or seasoning to preserve the stone surface.
• Included scraper: A multi-purpose plastic scraper doubles as a dough cutter and makes transferring or cleaning dough residue easier.

Who It's For

The Unicook stone is ideal for home bakers, pizza party hosts, and anyone using a grill or oven who wants a reliable tool for producing crisp crusts and evenly baked bread. Its large surface benefits households that make multiple pizzas or different baked goods in a single session.

Those with very limited oven or grill space, or buyers expecting a perfectly precise manufacturer dimension should check actual product measurements before purchase, since customers report mixed impressions of the size. Casual users who want a lightweight, small baking surface should look at smaller stones instead.

Pros & Cons

Pros

• Robust cordierite material provides strong thermal shock resistance and long life.
• High temperature tolerance lets you bake at temperatures that yield a crisp, well-browned crust.
• Large 18 in square area handles big pizzas or multiple items for entertaining.
• Thicker stone promotes even heat distribution and consistent baking results.

Cons

• One report notes the stone may not measure exactly 18 in by 18 in, so check fit for tight oven or grill spaces.
• Needs to be hand washed and cannot be cleaned with soap, which requires a bit more care than metal pans.

Specifications

Brand	Unicook
Material	Cordierite
Maximum heat resistance	1,450F (787C)
Dimensions	18 in x 18 in x 0.6 in
Care	Hand wash with warm water; no soap or detergent
Included accessory	Multi-purpose plastic scraper

Our Verdict

The Unicook Extra Large Pizza Stone is a practical choice for home cooks who want a dependable, heavy-duty baking surface for pizzas and bread; its cordierite build and high heat tolerance deliver consistently crisp results and good long-term value. Buyers should confirm fit for their oven or grill and be prepared for basic hand-wash care, but for frequent bakers the stone is a worthwhile upgrade.

Frequently Asked Questions

Can this stone go on a grill?
The stone is rated to 1,450F (787C) and is suitable for use on grills as well as ovens when placed and removed carefully to avoid sudden temperature shocks.

How should I clean the stone?
Allow the stone to cool, then hand wash with warm water only; do not use soap or detergent and never season with oil or grease.

Will it fit in a standard oven?
The stated dimensions are 18 in by 18 in by 0.6 in, so measure your oven or grill cooking area first, as some customers note size impressions can vary.