Blondies are a type of dessert bar that resembles brownies but are made with brown sugar instead of cocoa powder. They have a rich, chewy texture and are often flavored with vanilla, giving them a sweet, buttery taste. Common mix-ins include chocolate chips, nuts, and dried fruit, making them versatile and customizable. These treats are typically baked in a rectangular pan and cut into squares or rectangles for serving. Blondies are popular for their simplicity and can be enjoyed as a snack or dessert. They are often served at parties, potlucks, and family gatherings, appealing to a wide range of tastes.