By Miles SinclairUpdated November 2026
A gas grill griddle insert turns your grill’s cooking grates into a flat cooking surface for pancakes, smash burgers, fried rice and vegetables. The right insert depends on your grill’s model, the material of the plate, and how much you want to clean afterward. The picks below were chosen by reviewing product listings, brand reputation and common owner feedback patterns. No product was tested by our editors.
Our top picks at a glance
- 1
TOP CHOICEBest overallCharbroil Performance Series Griddle InsertView on Amazon - 2
Best for Weber Genesis 300 owners who want a full-size plateFull-Size Griddle Insert for Weber Genesis 300View on Amazon - 3
Best for a heavy, seasoned surfaceCast-iron Griddle Insert for Weber Genesis 300 SeriesView on Amazon - 4
Best for portable and off-grill useNonstick Flat Top Plate Insert with Removable HandlesView on Amazon
Our Top Picks
| Product | Best for | Key feature |
|---|---|---|
| Charbroil Performance Series Griddle Insert | Converting a standard gas grill | Universal grill-to-griddle fit |
| Full-Size Griddle Insert for Weber Genesis 300 | Weber Genesis 300 owners | Replaces 7524 grate |
| Cast-iron Griddle Insert for Weber Genesis 300 Series | Heat retention and searing | Enameled cast-iron surface |
| Nonstick Flat Top Plate Insert | Portable and occasional use | Removable handles, grease groove |
Charbroil Performance Series Griddle Insert
Charbroil Performance Series Griddle Insert | Turn Your Grill Into a Griddle
Best for: Converting a standard gas grill into a flat-top station with minimal fuss.
This is a good fit for cooks who want a general-purpose griddle surface without committing to a model-specific part. Check the listing’s dimensions against your grill’s grate area before ordering.
Pros
- Designed as a general grill-to-griddle insert
- Gives a wide, even cooking surface for breakfast and smash burgers
Cons
- Fit depends on confirming your grill’s cooking area
Full-Size Griddle Insert for Weber Genesis 300
Full-Size Griddle Inserts for Weber Genesis 300 Gas Grill, Griddle for Weber Genesis 300 Series E-310 E-320 E-330 S-310 S-320 S-330 EP-310 EP-320 EP-330 CEP-310 CEP-330, Replace for 7524 Grate
Best for: Weber Genesis 300 owners who want a full-size plate that replaces the grate.
Listed for a long run of Genesis 300-series model numbers, so it suits owners who already know their exact model. Compare your model number carefully before buying.
Pros
- Lists a wide range of compatible Genesis 300 models
- Full-size coverage across the cooking area
Cons
- Only useful if your model is on the compatibility list
Cast-iron Griddle Insert for Weber Genesis 300 Series
Cast-iron Griddle Insert for Weber Genesis 300 Series Gas Grills, Enameled Flat Top Griddle 7566 Replacement, Compatible with Genesis E/S/EP/CEP-310/320/330
Best for: Heat retention and a hard sear on smash burgers and steaks.
Cast iron holds heat well and rewards owners willing to maintain the surface. It suits cooks who prioritize searing over quick cleanup.
Pros
- Strong heat retention for even searing
- Enameled surface resists sticking when properly preheated
Cons
- Heavy to lift on and off the grill
Nonstick Flat Top Plate Insert with Removable Handles
Nonstick Coating Flat Top Plate Insert with Removable Handles & Grease Groove for Charcoal, Camping, Tailgating, Parties, BBQ Griddle for Gas Grill, 17" x 13" Cast Iron Flat Top Griddle for Stove
Best for: Portable use, tailgating and occasional griddle sessions.
Owners often report it is easier to move between a grill and a camp stove. The nonstick coating suits eggs and pancakes.
Pros
- Removable handles make it easier to carry and store
- Grease groove helps direct drippings away from food
Cons
- Nonstick coatings wear over time and need gentle utensils
Buying Guide
Confirm grill compatibility
Measure your cooking grate area and match your grill’s brand and model number before buying. Inserts sized for one grill family often will not seat correctly on another.
Choose the plate material
Cast iron retains heat and sears well but is heavy and needs seasoning. Nonstick coatings clean up faster but can wear, so avoid metal scrapers on them.
Check grease management
A grease groove or channel keeps drippings from pooling and reduces flare-ups. Make sure you can empty the tray easily after a cook.
Think about portability
If you plan to use the insert away from home, look for removable handles and a size that fits your travel setup.
Good picks for this: Full-Size Griddle Insert for Weber Genesis 300 and Nonstick Flat Top Plate Insert
FAQ
Can I use a griddle insert on any gas grill?
Not always. Many inserts are sized for specific grill models, so check the compatibility list and your grate dimensions first.
Do I need to season a cast-iron griddle insert?
Most manufacturers recommend a light coat of cooking oil and a preheat before first use to build a smoother cooking surface.
Can I cook on a griddle insert with the lid closed?
You can, but the lid traps heat and moisture, which can affect browning. Many cooks keep the lid open for smash burgers and pancakes.
Conclusion
For a full-size plate on a Weber Genesis 300, the model-specific inserts are the most direct fit. For a universal option on a different grill, the Charbroil insert is worth comparing. Choose cast iron if you value searing and heat retention, and a nonstick plate if you want easier cleanup or portability.
Sources
- Workplace grill and propane safety guidance you can apply at home (osha.gov)
- Safe cooking temperatures for meat, poultry and eggs (usda.gov)
Related reading
- Gas Grill Griddle Station: A Step-by-Step Setup Guide for Beginners
- 5 Best Griddle Plates for Gas Grill: Top Picks Compared (2026)
- 5 Best Gas Grills with Griddle Combo Picks for Backyard Cooking (2026)
- 3 Best Blackstone Gas Griddle Grill Picks for Backyard Cooking (2026)
- Wood Pellet Grill vs Gas Grill (2026): Which Is Better for Your Backyard?
About Miles Sinclair
Miles Sinclair is part of our editorial team and reviews and edits our BBQ & grilling guides, checking product details against manufacturer specifications and owner feedback.
