Grape-Nuts Coupon May 2012 Looking for some AWESOME savings on Grape-Nuts? We have the perfect coupon for you! Save $1.00 on  any one box of Grape-nuts or Flakes ….. NICE! Grape-Nuts coupon This is a Facebook promotion so you will have to “LIKE” the page first then print the your coupon. The coupons are SMARTSOURCE [...]