A brownie is a type of baked good that is typically composed of chocolate, sugar, eggs, and flour. A brownie recipe refers to a set of instructions or ingredients used to make brownies from scratch. These instructions may vary depending on the desired texture, flavor, and appearance of the final product. Some recipes may call for cocoa powder while others may use melted chocolate. Additionally, there are many variations of brownie recipes that include mix-ins such as nuts, coconut, or fruits.