What is the nutritional value of a buttermilk bar donut?
                                
                                
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                                    5 min read                                
                            
                                According to nutritional data from various manufacturers, a single glazed buttermilk bar donut can contain well over 400 calories. This rich, cake-like treat is a popular pastry, but understanding the nutritional value of a buttermilk bar donut is key to fitting it into a balanced diet.