Do Brownies Contain Soya? Understanding Soy in Baked Goods
                                
                                
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                                    4 min read                                
                            
                                According to many allergy information pages, commercial brownies often contain soya, primarily due to the soy lecithin found in most chocolate. The presence of soya in a brownie depends on the specific recipe, which can range from entirely soy-free homemade versions to store-bought mixes containing multiple soy derivatives.