Whataburger Breakfast on a Bun® — What’s In It, How Much & When to Order
whatamenuguide.com | Updated June 2026 🍳 Quick Answer: The Whataburger Breakfast on a Bun® is a toasted-bun breakfast sandwich with a fresh-cracked egg, American cheese, and your choice of sausage patty or crispy bacon. With sausage it has 510–520 calories and 26–27g of protein. With bacon it has 320–340 calories. Price starts around $3.89–$4.39. Available…