PanSpanSheet Pan Extender
Which sheet pan extender will give me straighter cake and brownie edges and fit the pans I already own?
If you bake on a half-sheet pan, I’d start with the Winco: it gives you 2-inch sides for thicker cakes and bars, with easy-grip edges. For quarter-size pans, choose the New Star for reinforced corners or the Restaurantware when its specified quarter-pan compatibility matches your pan. The key is matching the extender to your pan—not assuming every half- or quarter-size frame fits every brand.
#1 · Winco
Winco Aluminum Sheet Pan Extender, Half | High-rise walls for baking sheet cakes, Easy to grip edges, Stackable design, Heavy-duty, Great for Food Preparation
Choose this Winco for a half-sheet setup and a sturdy, straightforward frame for sheet cakes, brownies, or thicker bars. Its 2-inch walls and flat gripping edges make it the best all-around pick here for half-sheet bakers.
#2 · New Star Foodservice
New Star Foodservice Aluminum Sheet Bun Pan Extender, 9 x 13 inch | Quarter Size, Commercial Quality
Choose this New Star if your pan is the 9-by-13-inch quarter size and you want reinforced corners. It is a practical option for cakes, brownies, and cobblers, with hand washing as part of the routine.
#3 · Restaurantware
Restaurantware Quarter Size Aluminum Sheet Pan Extender, 2 In Tall, 1 Ct
Choose this Restaurantware frame for quarter-size baking when you have the quarter pans it is designed to fit. It is the quarter-size pick with a stated 2-inch height and a design aimed at straight cake edges.
#4 · Molded Fiber Glass Tray
Pan Extender Fiberglass 2" High, fits Half-Size Sheet Pan (13" x 18")
Choose this clear fiberglass extender if you want a half-sheet frame that is not aluminum. It is designed to fit a 13-by-18-inch pan and has reinforced edges.
Do you bake on a half sheet or a quarter sheet?
Start with the pan you already use most. The Winco and fiberglass extender are for half-sheet pans; the New Star and Restaurantware are quarter-size choices. If your pan’s size is unusual, measure its inside opening and compare it with the frame before choosing. A close match matters more than a familiar brand name.
Will the frame stop batter leaking underneath?
Treat an extender as a frame, not a sealed cake pan: batter can escape through gaps at the bottom or corners, especially if it is thin. Set the frame flat on the sheet and line the pan and frame with parchment, folding it neatly into the corners. For very loose batter, use a pan designed to contain it rather than counting on the extender to seal.
Will it give you perfectly even, square slices?
A frame gives batter a straighter boundary, so it helps avoid sloped sides and makes neat square cuts easier. It cannot prevent a cake from doming or guarantee identical baking at every edge; level the batter before baking and check for doneness rather than assuming the sides will bake exactly like the center. For quarter-size cakes, the Restaurantware is the most directly aimed at uniform, straight edges; for half sheets, I’d take the Winco.
What about fit, cleanup, and nonstick pans?
For a quarter sheet pan extender, match the frame’s footprint to the pan’s inside dimensions; “quarter size” alone is not a guarantee of a tight fit. The New Star is labeled for approximately 9-by-13-inch pans, while the Restaurantware is a quarter-size frame designed for specified quarter pans. If you bake on nonstick, check for rough contact points and use parchment as a buffer; the New Star’s reinforced corners are a useful feature, but no frame should be forced into a pan.
How they compare
Which one is yours
Winco: You have a half-sheet pan and want an aluminum 2-inch frame for cakes, brownies, and other thicker bakes.
New Star Foodservice: Your quarter-size pan is about 9 by 13 inches and reinforced corners matter to you.
Restaurantware: You have a compatible quarter-size pan and want a 2-inch frame focused on straight cake edges.
Molded Fiber Glass Tray: You bake on a 13-by-18-inch half sheet and prefer a clear fiberglass extender over an aluminum one.
You will also want
A frame and a hot sheet pan are awkward to handle together, so heat protection and a safe landing spot are the extras I’d keep nearby.
Joyhalo 4 Pack Pot Holders for Kitchen Clearance | Hot Pads for Kitchen, Countertops, Oven Pot Holders Bulk, Potholders Sets for Kitchens Heat Resistant, Grey
Use these pot holders to grip the hot sheet pan securely while moving a freshly baked cake or batch of bars.
Silicone Trivets for Hot Dishes, 4 PCS Multipurpose Heat Resistant Mat Thick Silicone Hot Pads Pot Holders for Kitchen Counter, Flexible Jar Opener Food Grade Spoon Holder, Silicone Coasters (Almond)
Set the hot pan down on a silicone trivet to protect your counter while the bake cools.
Questions buyers ask
What does a sheet pan extender do?
It adds taller, straighter sides to a rimmed sheet pan, giving cake batter and bar-cookie dough a more vertical boundary. That helps produce squarer edges and less trimming, but it does not guarantee an even rise or seal gaps underneath.
Which quarter sheet pan extender has straight sides?
The Restaurantware is specifically designed to produce straight cake edges; the New Star is the better fit to consider if your pan is about 9 by 13 inches and you value its reinforced corners.
What are the dimensions, and will a quarter-size extender fit my home oven?
The New Star is approximately 9 by 13 inches, and the Restaurantware is designed for quarter-size pans RWT0236 and RWT1157. A frame fitting your pan does not automatically mean it fits your oven, so compare the pan’s full outside footprint with your oven’s usable rack space before baking.
Will a Nordic Ware quarter sheet pan work with one of these?
Do not assume brand names guarantee compatibility. Measure the inside of your pan and compare it with the extender’s footprint; a close fit helps the frame sit flat and limits gaps for batter to escape.
How can I avoid batter leaking from a sheet pan frame?
Use a flat pan, seat the frame evenly, and line the pan and frame with parchment folded into the corners. Thin batter can still escape through gaps, so a sheet pan extender is a better choice for thicker batters than for a very loose mixture.
Is an extender useful for focaccia and deep-dish bars?
Yes, a 2-inch frame gives thicker doughs and bars more room than a shallow rimmed sheet pan. Make sure your pan and frame sit flat together, and leave enough room for the dough or batter to rise without reaching the top.