New! SavingStar Friday Freebie! April 10, 2015 by Coupon Printer Post contains sponsored/affiliate links and I get commissions for purchases made from links. Nice! Get FREE Jiffy® Corn Muffin Mix at a participating SavingStar retailer with this e-coupon! Just load and you’re ready to go! Check back every friday for a SavingStar Freebie! Save 100% when you buy ONE (1) 8.5 oz. box of Jiffy® Corn Muffin Mix SavingStar Offer! Expires 4/12/2015.