Griddle Replacement for Weber Genesis 300 Series - Cast Iron Flat Top

In this review of the Weber Genesis 300 series cast iron griddle replacement, the bottom line is clear: this heavy porcelain enamel cast iron plate is for grill owners who want a solid, even-heating flat top that fits Genesis 300 series models. The reviewer found it especially useful for cooking multiple items at once and for replacing worn or missing griddle inserts. Its thick construction holds heat well and the built-in oil hole helps manage grease, making it a straightforward swap for compatible Genesis grills.

Key Features

• Material: Thick porcelain enamel cast iron distributes heat quickly and evenly so foods sear consistently across the surface.
• Cooking area: Deep, large flat top lets you cook bacon, steaks and sandwiches simultaneously for faster meal prep.
• Grease management: Built-in oil leakage hole on the side bottom channels grease away to reduce spatter and pooling while cooking.
• Retention: The griddle retains heat longer due to its substantial mass, helping maintain steady cooking temperatures.
• Versatility: Usable on stove, oven, grill or over a campfire when the size fits, so it doubles as indoor and outdoor cookware.
• Compatibility: Designed to replace original Weber 7566 and related part numbers for Genesis 300 series grills for an easy fit.

Who It's For

This griddle is aimed at Genesis 300 series owners who want a cast iron flat top that matches the original fit and cooking feel. It is well suited for people who regularly cook multiple items at once, such as breakfast, sliders or mixed grill plates, and for anyone who prefers the heat retention and searing of cast iron.

Those who should look elsewhere include owners of non-Genesis grills or small portable grills where the 19.4 in x 12.5 in dimension will not fit, and users who prefer a non-porcelain or lighter-weight griddle material for easy handling.

Pros & Cons

Pros

• Solid, thick cast iron construction gives even heat distribution and strong heat retention.
• Large cooking surface with an oil hole makes multi-item cooking and grease control easier.
• Reported by customers to fit well and feel as substantial as original manufacturer grates, delivering good replacement value.
• Can be used on multiple heat sources including stove, oven, grill or campfire if size allows.

Cons

• At its weight and thickness, it requires seasoning and careful handling; it is heavier than thin alternatives.
• Fit depends on exact model and measurements, so buyers must confirm the 19.4 in x 12.5 in dimension before ordering.

Specifications

Material	Porcelain enamel cast iron
Dimensions	19.4 in L x 12.5 in W
Included	1 griddle plate
Compatibility	Weber Genesis 300 series E-310, E-320, E-330, S-310, S-320, S-330 and related models
Original part equivalents	Fits Weber 7566 and related replacement numbers
Use cases	Stove, oven, grill and campfire when size fits

Our Verdict

The cast iron flat top is a practical, value-focused replacement for Genesis 300 owners who want improved heat retention and a spacious cooking surface. Its heavy porcelain enamel cast iron construction yields even cooking and the oil hole helps with grease control, making it a good buy for home grillers who need a like-for-like griddle replacement and plan to season and care for cast iron cookware.

Frequently Asked Questions

Will this griddle fit my Genesis 300 series grill?
It is designed for Genesis 300 series models such as E-310, E-320 and E-330; confirm your grill can accept a 19.4 in x 12.5 in plate before purchasing.

How do I clean and maintain the griddle?
Clean with water and a sponge, dry thoroughly, then season by brushing with vegetable oil and heating to build a non-stick surface.

Can I use this griddle on a stove or over a campfire?
Yes, it can be used on a stove, oven, grill or campfire if the griddle fits the cooking surface and is handled carefully due to its weight.