A griddle insert lets you cook foods that can fall through grill grates—such as eggs, pancakes, and chopped vegetables—on your gas grill. The right choice depends first on fit: some inserts replace a grate on a specific Weber model, while others are designed for a portable grill or offer a more general size. Below, we compare five options by compatibility, construction, cooking area, and practical limitations so you can narrow down the best griddle insert for your gas grill.
Quick Comparison
| Product | Best For | Key Details |
|---|---|---|
| EasiBBQ Full-Size Genesis 300 Griddle Insert | Genesis 300 owners seeking a grate replacement | Coated full-size insert; check grill model carefully |
| BBQ Future Full-Size Genesis II 300 Griddle | Compatible Genesis II 300 grills | Carbon steel, nonstick coating, handles and mitts included |
| onlyfire Weber Traveler Griddle Insert | Weber Traveler portable grill owners | 24.6 x 11.6 inches; carbon steel with ceramic coating |
| Weber Genesis II Porcelain-Enameled Griddle | Genesis II owners wanting a branded grate replacement | Cast iron; angled cooking surface directs grease |
| onlyfire Universal Cast Iron Griddle | Flexible use on a grill or stove | 18.6 x 14 inches; raised sides and grease trough |
Our Picks: Best Griddle Insert For Gas Grill reviews
1. EasiBBQ Full-Size Griddle for Weber Genesis 300
This full-size insert is made for select Weber Genesis 300 series grills. It is intended to replace a compatible grate or cast-iron griddle, giving you a flat surface for foods that are awkward to cook between grill bars. The listing names several Genesis E, S, EP, and related models, along with compatible part numbers.
The product description notes that the insert conducts heat well, but also gives specific limits: do not heat it empty or dry, and keep the temperature at or below 280°C. Those instructions matter when preheating. Add food or oil rather than leaving the insert bare over the burners, and check your grill model and part number before ordering.
Compared with the Genesis II options below, this insert is aimed at a different grill generation. The listing does not provide dimensions, so owners should confirm the fit against their grill and the listed replacement-part numbers rather than assuming that all Genesis 300 grills share the same grate size.
Pros:
- Full-size format intended to replace a compatible grate
- Lists a range of Genesis 300 series models and replacement-part numbers
- Designed for cooking on a flat surface instead of open grates
Cons:
- Not suitable for heating empty or dry; the stated temperature limit is 280°C
- Dimensions are not provided in the supplied product details
Verdict: Choose this insert if your Genesis 300 model matches the listing and you are comfortable following its heat-use instructions.
2. BBQ Future Full-Size Griddle for Genesis II 300
This full-size griddle is designed for select Weber Genesis II 300 and II LX 300 series grills. It measures 26 by 18.7 inches and is listed as a replacement for several Weber part numbers. The package includes two handles, two silicone oven mitts, and screws, which may make lifting and handling the insert more manageable.
The cooking surface is described as carbon steel with a nonstick coating. Its broad format can give you room to cook several kinds of food together, while the listed construction is intended to retain heat and resist warping. As with any full-size insert, consider the weight and storage space before buying, especially if you plan to switch between grates and griddle cooking often.
Fit is the main caveat: the listing specifically says this does not fit the original Genesis I 300 series. It names compatible Genesis II models and replacement-part numbers, so compare those details with your grill’s model label before ordering. If you own a Genesis 300 from another generation, the EasiBBQ option may be the more relevant listing to check.
Pros:
- Large 26-by-18.7-inch cooking surface
- Carbon-steel construction with a nonstick coating
- Includes handles, silicone oven mitts, and screws
- Lists a wide range of compatible Genesis II 300 models
Cons:
- Does not fit the original Genesis I 300 series
- Its full-size dimensions require careful fit and storage planning
Verdict: This is a strong candidate for a compatible Genesis II 300 owner who wants a broad cooking surface and included handling accessories.
3. onlyfire Griddle Insert for Weber Traveler
This griddle is shaped for the Weber Traveler portable gas grill, with a listed size of 24.6 by 11.6 inches. Its long, narrow profile suits a portable grill better than the broad inserts made for full-size Genesis grills. The carbon-steel construction has a ceramic-coated cooking surface, and the product is described as pre-seasoned and ready to use.
The full-surface design gives you a flat cooking area for breakfast foods, burgers, or chopped ingredients while traveling or cooking outdoors. A grease vent is designed to capture and remove excess grease, which can help manage runoff during cooking. The listing also describes the insert as easy to clean, though the supplied details do not specify a particular cleaning method.
This is a focused choice rather than a universal one: it is made for the Weber Traveler, so it is not the right pick for a standard Genesis grill. If your grill is a Traveler, its stated fit and pre-seasoned setup make it a more direct match than a general-purpose griddle.
Pros:
- Designed specifically for the Weber Traveler portable gas grill
- Large cooking area for a portable-grill format
- Carbon steel with a ceramic-coated surface
- Listed as pre-seasoned and ready to use
Cons:
- Not intended as a universal insert for other grill models
- Its long, narrow shape may not suit cooks seeking a wider surface
Verdict: Pick this model if you own a Weber Traveler and want a dedicated flat-top surface without moving to a separate griddle appliance.
4. Weber Porcelain-Enameled Cast-Iron Genesis II Griddle
Weber’s griddle insert is made from porcelain-enameled cast iron and replaces one grate on compatible Genesis II or Genesis II LX grills with three, four, or six burners. Because it replaces a single grate rather than covering the whole grill, you can use it alongside the remaining cooking grates for a mix of griddle and traditional grilling.
The angled cooking surface is designed to guide grease into a reservoir, which then directs it to the cook box between the Flavorizer Bars. The porcelain-enameled cast iron is described as offering heat retention and distribution while helping prevent food from sticking. Weber recommends hand washing the insert.
Compatibility needs extra attention. The listing says it does not fit certain newer Genesis gas grills, so confirm the exact grill generation before buying. This insert has a smaller cooking footprint than the full-size BBQ Future option, but its partial-grate layout offers more flexibility if you do not want to convert the whole grill to a flat top.
Pros:
- Porcelain-enameled cast iron construction
- Replaces one grate, leaving room for regular grilling
- Angled surface directs grease toward the grill’s collection path
- Designed for compatible Genesis II and II LX grills
Cons:
- Does not fit certain newer Genesis gas grills
- Hand washing is recommended
Verdict: Consider this Weber option if you want a partial-grill griddle and have confirmed that your Genesis II or II LX model is compatible.
5. onlyfire Universal Raised-Edge Cast-Iron Griddle
This 18.6-by-14-inch griddle is a freestanding-style cooking surface for use on a gas grill or stove. It is made from enameled cast iron and has raised sides measuring 5.5 centimeters, plus handles on both sides. The walls help keep small ingredients from sliding off as you turn or move food.
A full-width grease trough is designed to collect grease, while the smooth nonstick surface is intended to make cleanup easier. The listing highlights foods such as pancakes, eggs, burgers, vegetables, and seafood. Its versatility is a plus if you want a griddle that can move between outdoor cooking setups, but the “universal” label does not guarantee a precise fit on every grill. Check the dimensions against your cooking area and make sure the handles can sit safely.
Unlike the model-specific Weber inserts, this option does not replace a particular grate. That makes it more flexible across setups, but it may not cover your grill as neatly or lock into place like a custom-fit insert. Its raised sides are useful for containment, though they also make it less like a completely flat restaurant-style cooktop.
Pros:
- Can be used on a gas grill or stove
- Raised sides help contain food
- Handles on both sides for moving the griddle
- Full-width grease trough and smooth cooking surface
Cons:
- Not a model-specific replacement grate
- Raised edges may be less suitable for cooks who want a completely flat surface
Verdict: Choose this griddle if flexibility matters more than a custom fit and its dimensions work with your grill or stove.
How to Choose a Griddle Insert for a Gas Grill
Confirm the grill model and generation
Fit should be your first check. A griddle made for a Genesis 300 is not automatically compatible with a Genesis II 300, and a portable-grill insert may only fit its named grill. Check the model label on your grill and compare it with the product’s compatibility list. If the listing provides replacement-part numbers, use those too. When you cannot confirm the match, contact the seller before ordering rather than relying on the grill’s brand name alone.
Choose between a full-size insert and a partial-grate insert
A full-size insert creates a broad flat cooking area, which can be useful for preparing several foods at once. It also takes up more space and may require more effort to move and store. A partial-grate model, like the Weber insert in this guide, lets you keep some traditional grill space available. Consider how often you cook griddle foods and whether you want to switch between cooking styles in the same session.
Compare materials and coatings
The options here include carbon steel, cast iron, and porcelain-enameled cast iron, as well as coated surfaces. Product descriptions connect cast iron with heat retention and distribution, while the carbon-steel models emphasize their coated cooking surfaces. Follow the care and heating instructions for the specific insert you choose. For example, the EasiBBQ listing says not to heat its insert empty or dry and sets a maximum temperature of 280°C.
Look at grease handling and edge design
Grease management can affect both cooking and cleanup. Some designs use an angled surface or trough to direct or collect grease, while raised sides can help keep food from sliding off. Think about what you cook most often: pancakes and chopped vegetables may benefit from raised edges, while foods that produce more grease make a clear drainage or collection path especially useful.
Check dimensions, handles, and storage needs
Compare the insert’s listed dimensions with the usable area of your grill. Make sure it can sit securely without blocking controls or extending into an unsafe position. Handles can make lifting easier, but they also need clearance. If you plan to remove the insert between uses, consider where you will store it and whether the size and weight will be practical for you.
Read the care instructions before buying
Cleaning requirements vary by material and coating. The Weber cast-iron insert calls for hand washing, while other listings describe their surfaces as nonstick or easy to clean without providing detailed care steps. Check the product’s current instructions before using cleaners or tools that could damage a coating. Proper heating and cleaning habits can help you avoid unnecessary wear.
Frequently Asked Questions
Can I use any griddle insert on any gas grill?
No. Some inserts are made for a specific grill model or generation, and others are simply sized to sit on a cooking surface. Check the model list, part numbers, and dimensions before buying. A product described as universal still needs to fit your grill securely.
How do I know whether a Genesis griddle insert will fit my grill?
Find your grill’s exact model number and generation, then compare it with the product listing. The Genesis 300 and Genesis II 300 inserts in this guide are different products with different compatibility lists. Do not assume that similar model names mean the same grate dimensions.
Can I use a griddle insert for eggs and pancakes?
Yes. A flat surface is useful for foods that can fall through grill grates, including eggs and pancakes. Always follow the insert’s heating instructions and use the cooking method recommended for its material and coating.
Is a full-size griddle better than one that replaces a single grate?
It depends on how you cook. A full-size insert offers more flat cooking area, while a single-grate insert leaves part of the grill available for regular grilling. Think about your usual meal size and whether you want both cooking surfaces available at once.
Can I leave a griddle insert on the grill while cooking?
These inserts are designed for grill cooking, but follow the instructions for your specific model. In particular, the EasiBBQ listing says not to heat its insert empty or without food or oil, and to keep it at or below 280°C.
Are these griddles easy to clean?
Cleaning depends on the material and surface. Weber recommends hand washing its porcelain-enameled cast-iron insert, while other products describe coated or smooth surfaces. Check the care instructions for your chosen model and avoid assuming that all coatings can be cleaned the same way.
Final Recommendation
The best griddle insert is the one that fits your grill securely and suits the way you cook. For a compatible Genesis II 300, the BBQ Future insert offers a broad surface and includes handling accessories. Weber’s partial-grate cast-iron model is a good fit for owners who want to keep some grill space open, while the onlyfire Traveler insert is the dedicated option for that portable grill. If you need a more flexible surface for different setups, consider the raised-edge onlyfire griddle—but check its dimensions first. Confirm compatibility before ordering, especially when choosing a model-specific insert.