Available exclusively online and through the brand’s app from March 9 through April 3, 2023, Potbelly is inviting its Perks Rewards members to triple down on its toasty creations by trying all three of its limited time meatball sandwiches during the promotional timeframe for an added reward.

Available as part of the brand’s famous Underground Menu, the three off-menu meatball sandwiches served during the promotion include:

• Sicilian