Stanbroil Full Size Griddle Insert for Weber Genesis II 300 Series

In this review the Stanbroil Full Size Griddle Insert is judged on fit, cooking performance and ease of cleaning. It is aimed at owners of Weber Genesis II and II LX 300 series gas grills from 2017 and newer who want to convert their cook surface into a full flat top quickly. The single biggest reason to buy is the combination of a ceramic coated cooking surface and a full-size plate that delivers consistent, nonstick heating across the entire grill, making it simple to cook breakfast items, smash burgers and foods that need a flat sear.

Key Features

• Exact fit for compatible Genesis models: The insert is designed for Weber Genesis II 310, 315, 335, 345 and Genesis II LX 340 and later 325/335 (2022), so it sits securely without modification.
• Ceramic coating cooking surface: The ceramic coating provides superior nonstick performance and corrosion resistance to make flipping and release easier and to reduce sticking when cooking eggs or pancakes.
• Even heating across the plate: The flat top spreads heat reliably so foods like steak, bacon and smash burgers get an even sear without cold spots.
• Grease drain and easy cleanup: An integrated grease drain channels fat away during cooking and makes post-cook cleaning with a soft sponge or damp cloth straightforward.
• Side handles for removal: Built-in handles let you lift the heavy griddle plate out of the grill safely for cleaning or storage.
• Quick conversion: The plate converts the entire cooking surface into a griddle in seconds, offering a versatile way to cook items that need a flat top.

Who It's For

This griddle insert is best for Genesis II 300 series owners who regularly cook breakfast, small-batch stir-fries, pancakes, eggs or smash burgers and want a reliable, full-size flat top without buying a second appliance. Home cooks who value even heating and a nonstick surface will appreciate the ceramic coating and thoughtful details such as the grease drain and side handles.

It is not for owners of older Weber Genesis 300 series grills from 2007-2016, as it will not fit those models, and users who prefer an uncoated steel griddle for a patina and seasoning approach may want a different plate. Also, those who plan heavy-duty scraping should avoid abrasive cleaners and use a soft sponge to protect the coating.

Pros & Cons

Pros

• Heavy-duty construction and weight give a stable, professional feel and good heat retention.
• Ceramic coating reduces sticking and simplifies cleaning with just a damp cloth or soft sponge.
• Grease drain and side handles make cooking and removal practical and safer.
• Fits specific Genesis II models for a secure installation without modification.

Cons

• The finish has mixed feedback from some users who reported flaking, so long-term durability of the coating may vary.
• Does not fit older 2007-2016 Genesis 300 series grills, so compatibility must be verified before purchase.

Specifications

Product type	Full-size griddle insert
Compatible grills	Weber Genesis II and II LX 300 series (2017+), specific Genesis II 310, 315, 335, 345, LX 340, Genesis 325/335 (2022)
Not compatible with	Weber Genesis 300 series (2007-2016)
Cooking surface	Ceramic coated flat top
Cleaning	Wipe with soft sponge or damp cloth; do not use steel wool or sharp items
Features	Grease drain and side handles for removal

Our Verdict

The Stanbroil griddle insert is a solid, practical upgrade for compatible Genesis II owners who want a versatile flat top for breakfast, burgers and delicate foods. It offers even heating, a nonstick ceramic surface and useful cleanup details that make it good value for cooks who need a full-size griddle without adding another appliance, provided they accept the risk of occasional coating issues reported by some users.

Frequently Asked Questions

Will this fit my Genesis grill?
It fits Weber Genesis II and II LX 300 series grills from 2017 and newer, including listed 310/315/335/345 and LX 340 and the 2022 325/335; it does not fit 2007-2016 Genesis 300 models.

How do I clean the griddle?
Clean with a soft sponge or damp cloth; avoid steel wool or sharp scrapers to protect the ceramic coating.

What can I cook on it?
You can cook eggs, pancakes, bacon, steak, smash burgers and rice or other flat-top friendly foods on the full-size griddle.