What happens to milk when you cook muffins?

When you cook muffins, the milk in the batter undergoes several changes. It contributes moisture and helps with the overall texture, while the heat causes proteins in the milk to denature, aiding in the structure of the muffin. Additionally, lactose in the milk can caramelize slightly, enhancing flavor. Overall, the milk plays a crucial role in creating a tender and flavorful final product.