Dessert bars are sweet treats that are typically baked in a flat pan and then cut into squares or rectangles for serving. They can come in various flavors and textures, often combining elements like cookies, brownies, or cheesecake. Common ingredients include flour, sugar, butter, and eggs, along with flavorings such as chocolate, fruit, or nuts. These bars are popular for their convenience, as they are easy to make and serve at gatherings or parties. Some well-known types of dessert bars include brownies, blondies, and lemon bars. They can be enjoyed warm or chilled, making them versatile for different occasions.