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Firehouse Subs is now shaking things up with the addition of the brand new Prime Rib Steak Sub to their menu. 

Special cuts of seared and slow-cooked prime rib are the star of the Firehouse Subs’ new Prime Rib Steak Sub. Packed with tomatoes, lettuce, provolone cheese and caramelized onions, the Prime Rib Steak Sub is also served on a toasted sub roll with deli mustard and a flavorful garlic mayonnaise.

Participating Firehouse Subs shops will only be dishing up the Prime Rib Steak Sub for a short time.