McDonald's is making 4 key changes to its burgers — here's what to expect

• McDonald's is making four tweaks to its signature Big Mac sandwich and cheeseburgers.
• Additions include caramelized onions, softer buns, melted cheese, and more Big Mac sauce.
• McDonald's last month also decided to rebrand its crispy chicken sandwich to the McCrispy.

McDonald's is making some tweaks to its signature Big Mac sandwich and classic cheeseburgers.