Beginning Feb. 28 and for a limited time, the company is offering customers any footlong sub for $6.99 when they use promo code "699FL" on the Subway App or online at Subway.com in a deal Subway ...

Let the sandwich grill for about 3 minutes until golden. Place butter pats on the ungrilled side and carefully turn the sandwich over to grill; place a heavy pan on top of the sandwich once again.