McDonald’s Egg McMuffin is turning 50 on Thursday and to celebrate the fast-food chain will sell the iconic breakfast sandwich for 63 cents through the McDonald’s app.

“As we celebrate 50 years of this iconic breakfast sandwich, there’s no better time for our fans to try these twists for themselves than on Thursday, Nov. 18, when we’re offering the Egg McMuffin at a throwback price of 63 cents on the McDonald’s app,” reads a press release issued ahead of Thursday’s deal.

"The Egg McMuffin, the first-ever quick service restaurant breakfast sandwich, joined the McDonald's menu in 1971 in Santa Barbara, California, and customers have been getting creative with it ever since," said Molly McKenna, McDonald's senior director of brand communications, in the release.

Using the app will allow customers to “hack” their Egg McMuffin with anything they want such as cheese, bacon, chicken, tomatoes. Another idea is to substitute the muffins for hashbrowns.

The iconic sandwich was invented by Herb Peterson in 1971 and it debuted in 1972 after Peterson thought of an idea for an eggs benedict-inspired item. The sandwich was then introduced nationwide in 1975. The new push by the fast-food giant comes as Taco Bell was promoting free breakfast burritos a month ago. McDonald’s app has accounted for 20% of its sales.

RELATED STORIES