MyPanera Rewards members (not to be confused with YourPanera or OurPanera) have the chance to be offered a free bagel or a free coffee every day for the month of January! Simply log into your account each day to see if a freebue is listed in your rewards or you can check your email for a daily notice from Panera.
If you receive either of these, take your Panera card into the store that day and you'll get a free bagel (without any spread.) Who gets the freebie is randomized each day, so make sure to check your account / email every day this month.
If you dig this offer, you'll probably enjoy Panera's birthday freebie offer too!