Which breakfast has the most calories? An Ultimate Guide
                                
                                
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                                    5 min read                                
                            
                                At McDonald's, the Big Breakfast with Hotcakes famously contains 1,340 calories, making it one of the highest-calorie fast-food options available. However, which breakfast has the most calories overall depends heavily on ingredients, preparation, and portion size, extending far beyond the drive-thru.