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.

First introduced in 1999, McDonald’s Bagel Sandwiches—then, an egg plus protein of choice—quickly gained fans for being a comprehensive breakfast on-the-go. According to New York Post, the global fast-food chain took standalone bagels off its breakfast menu in 2020.