Store Bagel Boss of Roslyn with kosher section is located on 400 Willis Ave, Roslyn Heights in New York. Bagel Boss of Roslyn is a kosher delicatessen offering traditional Jewish foods and desserts. Gluten free and vegan options are also avaliable available. Dining room, take -out, or let us cater your next event. Full event planning services are available for you through our elite catering division, 390 Events.