Tracked by Evreward since 2005, Mrs. Fields offers coupons, cash back rebates and rewards, with savings as high as 40% off. Mrs. Fields discount coupons are somehwat rare, available a few times each year, but are often more valuable than similar merchants. Even when Mrs. Fields doesn't have a coupon, you can always get up to 16% cash back, and other great rewards, with every purchase.