OAKLAND, CALIF. — The success of the J.M. Smucker Co.’s Uncrustables brand has led to the launch of several similar products looking to latch onto interest in the frozen handheld sandwich category. Chubby Snacks, for example, has grown in recent years behind its cloud-shaped organic wheat bread filled with peanut butter or almond butter and specialty jams. Late last year, Rudi’s Mountain Bakery entered the frozen foods category with the launch of Texas Toast. In February, the brand launched breakfast sandwiches, also known as “Sammies,” with each sandwich offering 13 to 17 grams of protein.

Now, in partnership with Oakland-based food innovation company Voyage Foods, Boulder, Colo.-based Rudi’s Mountain Bakery in May will roll out peanut-free versions of Sandos.

“We’re pleased to announce our partnership with Voyage to create Rudi’s nut-free Sandos,” said Justin Gold, founder of Justin’s and chief innovation and strategy officer at Rudi’s Mountain Bakery. “Voyage’s roasted seed blend is creamy and delicious, pairing perfectly with Rudi’s offering PB&J lovers a delicious, nut-free, and portable alternative that can be enjoyed anywhere, anytime.”

Sandos, which will be available for sampling at Natural Products Expo West March 13-16 in Anaheim, Calif., are made with Rudi’s signature Country Morning white bread and Voyage’s roasted seed spread. The sandwiches contain 9 grams of protein per serving and will be sold in 4-count boxes of 2.8-oz sandwiches. Initially, two varieties will be available: grape and strawberry.