Tlllamook and KEWPIE Partner on the Ultimate Grilled Cheese Spread, Butternaise

 Butternaise will be available for a limited time online beginning Nov. 6, 2025.

Courtesy Tillamook, PRNewswire

The grilled cheese sandwich is a timeless favorite that brings comfort to kids and adults alike. Whether you prefer it on sourdough, white, or wheat, with cheddar, American, or a mix of cheeses, everyone has their own perfect version.

Traditionally, most people rely on butter to achieve that golden, crispy exterior. But there’s a growing camp of grilled cheese lovers who swear by mayonnaise instead. Earlier this year, chefs from Tillamook put the debate to the test at their Grilled Cheese Fest — and the verdict? The best sandwiches use both.

“The grilled cheese may seem simple, but it’s anything but basic,” said Chef Josh of Tillamook. “After spending more than two years perfecting our signature grilled cheese — which we serve to nearly 100,000 guests at Tillamook Creamery each year — I’ve learned just how dynamic and comforting this sandwich can be. My goal is to help anyone turn a humble sandwich into a golden, gourmet masterpiece.”

To make it easier for fans to recreate that perfect bite at home, Tillamook has teamed up with Japanese mayonnaise brand KEWPIE to create a new hybrid spread: Butternaise. This blend of Tillamook Extra Creamy Unsalted Butter and KEWPIE Organic Mayonnaise promises the ultimate texture and flavor for your next grilled cheese.

The limited-edition Butternaise Gift Set — which includes a jar of Butternaise, two packs of Tillamook cheese, and a spreader will be available online for $15 while supplies last.

So whether you’re team butter, team mayo, or somewhere in between, this collaboration might just change the way you make your next grilled cheese forever.

The Butternaise gift set will go on sale on Thursday, Nov. 6, 2025, while supplies last. Visit the Tillamook website for recipes, including the classic Tillamook Grilled Cheese.