Wendy's Bacon Portabella MeltWendy’s is reprising its Bacon Portabella Melt but is serving it on a new bun.

The Bacon Portabella Melt on Brioche is a quarter-pound beef patty topped with sautéed portobello mushrooms, Cheddar cheese sauce, applewood-smoked bacon and two slices of American cheese, served on a brioche bun and toasted to order. It is priced at a recommended $4.79 and will be available from Nov. 11 until late December.

The new bun replaces the 6,500-unit burger chain’s pretzel bun, which was introduced as a limited-time offer earlier this year and will be discontinued as supplies end, the Dublin, Ohio-based company said.

Burger King is adding the Big King sandwich, previously a limited-time offer, to its permanent menu, for a suggested price of $3.69.

The sandwich is two beef patties topped with proprietary King Sauce, lettuce, American cheese, pickles and white onions, served on a sesame seed bun. Unlike earlier iterations of the Big King, the new item also has a middle bun, similar to McDonald’s Big Mac, as noted in earlier reports.

Quick-service chain Del Taco is introducing a new line of Epic Burritos intended to compete with fast-casual chains.

Big King sandwichThe three new burritos replace the 551-unit chain’s 16- to 18-ounce Macho Burritos. They range from 14 to 18.5 ounces and are priced starting at $4.99.

• Epic Fajita Burrito: Grilled chicken or steak, roasted vegetables, black and pinto beans, cotija cheese, lime rice, sour cream and guacamole

• Epic Steak & Potato Burrito: Carne asada steak, crinkle-cut fries, chipotle sauce, bacon, Cheddar cheese and sour cream

• Epic Chicken Chipotle Ranch Burrito: Marinated grilled chicken, lime rice, chipotle and ranch sauces, bacon, Cheddar cheese, lettuce, guacamole and pico de gallo.

“Burritos have been reframed by fast-casual competitors, who have increased guest expectations around size, flavor and variety. With Epic Burritos, we are satisfying those expectations with the same freshness and value proposition that defines the Del Taco brand, but with the convenience of a drive thru and at a lower price point,” chef brand officer John Cappasola said in a press release.

Subway has introduced two sandwiches made with Sriracha sauce. Chicken or steak sandwiches are topped with creamy Sriracha sauce, pepper Jack cheese and a choice of vegetables.

Subway's Sriracha Steak MeltThe Sriracha Chicken Melt is priced at a suggested $4.50 for a six-inch sub or $7 for a Footlong. The Sriracha Steak Melt is priced at $4.75 for a six-inch sub and $7.50 for a Footlong.

The sandwiches are available through November, but the new sauce, which can be added to any other sub, including breakfast sandwiches, will be available at least through the end of the second quarter of next year.

Red Robin has introduced a new premium burger inspired by a sandwich developed by New York City-based fine-dining chef Laurent Tourondel. The item is the first in a new “Red Robin’s Finest” line of hand-formed, half-pound Black Angus burgers topped with premium ingredients.

The Finest Smoke & Pepper Signature burger is made with black-peppered bacon, extra sharp Cheddar and a barbecue sauce developed by Tourondel. The burger is flavored with alderwood smoked sea salt and served on a buttered ciabatta bun. It is available for an unspecified limited time, with unlimited Bottomless Steak Fries, for $13.49.