McDonald's is offering Egg McMuffins and Sausage McMuffins with Egg for just $1 on Sunday, when ordered through the McDonald's app. Deemed Egg McMuffin Day, the celebration honors the breakfast sandwich's 50th anniversary.

You can get a McDonald’s egg McMuffin for $1 – but you’ll have to act fast. On Sunday, March 2, McDonald’s is offering customers a classic egg McMuffin or sausage McMuffin with egg for $1 when they order in the mobile app, according to the fast food chain. No additional purchase is required, but you must be a rewards member.