Right near the Roslyn train station is the Bagel Market Cafe.  This cafe is not a bagel place.  Their strength are their sandwichs and salads.  If you want to go for bagels then try Bagel Boss.  But what they do well they do really well.  My recommendation is to try their create your own salads.  Here is a coupon that I found on LB Coupons  (http://lbcoupons.com/bagel_market_cafe):