McDonald's said Tuesday that it is doubling down on breakfast by introducing bagel sandwiches nationwide to celebrate the Egg McMuffin's 50th anniversary. Why it matters: Breakfast is big business for fast-food chains and expanding menus can boost morning sales.

McDonald’s is bringing back the hugely popular Steak, Egg, and Cheese Bagel across the U.S., starting today. Find out why people are so excited about this breakfast sandwich and how you can get one.

Celebrate National Egg McMuffin Day: Patrons can grab an Egg McMuffin or Sausage McMuffin with Egg breakfast sandwich for just $1, available exclusively through the McDonald’s App on Sunday, March 2.