Ruby Tuesday is on board with four new burgers featuring the pretzel bun. The new Ruby Tuesday Pretzel Burgers will start at $8.99. Spicy Jalapeno Pretzel Cheeseburger - Looking for a real hottie? This burger is topped with a spicy pepper jack cheese, crispy jalapeÃ±os, and finishes with a creamy chipotle mayonnaise. Itâ€™s muy caliente. Bacon Cheese Pretzel Burger - Everybody loves a little thick juicy bacon between their toasted Pretzel buns. This burger is topped with succulent applewood smoked bacon, oozing cheddar cheese, and bacon mustard mayonnaise. Mmm, bacon. Portabella Crispy Onion Pretzel Cheeseburger â€“ This tasty threesome of meaty portabella mushrooms, tangy Swiss cheese and crisp onion straws to top it off, gets down for one hot mess of savory and satisfying flavors. Black & Blue Bacon Pretzel Burger â€“ This bad boy is topped with tangy blue cheese and savory applewood smoked bacon, this man of a burger is then blackened and grilled to succulent perfection. Now that makes this baby, tough to beat.