How Many Calories Are in a Piece of Cheese and Onion Quiche? The Definitive Guide
                                
                                
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                                    4 min read                                
                            
                                A standard store-bought piece of cheese and onion quiche can contain around 250-280 calories, but this can change significantly depending on the product. The exact number of how many calories are in a piece of cheese and onion quiche depends on a variety of factors, including its size, ingredients, and preparation method.