In honor of National Sandwich Day on Nov. 3, Tillamook teamed with KEWPIE, known for its umami-packed mayonnaise, to launch a new, spread made specifically to create perfectly crusted grilled cheese sandwiches: Butternaise.    

The launch comes on the heels of a recent Tillamook survey revealing that only 1 in 4 Americans consider themselves grilled cheese experts—despite it being crowned America's favorite sandwich. Recognizing this confidence gap, Tillamook stepped up to help, partnering with culinary creators to share expert techniques and recipes.  

"Butter? Mayo? Why not both. While 71% of Americans butter their bread, and 12% swear by mayo Tillamook Executive Chef Josh Archibald says a blend of both is the only way to go. Inspired by his perfected grilled cheese sandwich recipe, Butternaise is crafted with Tillamook’s award-winning, Extra Creamy Salted Butter, KEWPIE Organic Mayonnaise and Spiceology, Alvin Cailan Fries Szn Blend to deliver bold flavor, creamy texture, and the ultimate golden crisp, for grilled cheese sandwich lovers everywhere," Tillamook stated.

Starting, Nov. 6 while supplies last, grilled cheese sandwich lovers can purchase Butternaise only on shop.tillamook.com. The spread is accompanied with a spreader and Tillamook Medium Cheddar and Sharp Cheddar Cheese.