It happened around 11:26 p.m. on Friday, March 6th at the restaurant in the 5100 block of Woodland Avenue.
Surveillance video shows one of the robbers pulling a gun on the cashier.
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He then reaches in and grabs a handful of cash before taking off.
Police say the second suspect stayed outside, acting as a lookout.
The first suspect is described as a black male, approximately 20 years old, 5'8"-5'9" tall, with a stocky build and medium complexion.
He was last seen wearing a white and blue hooded jacket underneath a dark colored jacket and a ski mask covering the lower half of his face.
The second suspect is described as a black male, approximately 20 years old who was last seen wearing a dark colored hooded sweatshirt, dark colored pants and light colored sneakers.
Anyone with information is urged to contact Philadelphia Police at 215-686-TIPS (8477), text a tip to PPD TIP (7738847) or online at www.phillypolice.com. All tips will be confidential.