What is the primary use of a rolling pin in baking?

The primary use of a rolling pin in baking is to flatten dough. This kitchen tool is essential for preparing various baked goods, such as pie crusts, cookies, and pastries. By rolling out the dough, a rolling pin helps achieve an even thickness, which is crucial for uniform cooking and texture. The process not only makes the dough more manageable for shaping but also helps to prevent it from sticking to surfaces with the right technique. The ability to flatten and shape dough accurately plays a significant role in the quality of the final product, making the rolling pin a fundamental tool in the baking process.