Melted butter is simply butter that has been heated until it turns from a solid to a liquid state. This process usually occurs at temperatures around 90 to 95 degrees Fahrenheit (32 to 35 degrees Celsius). Melted butter is often used in cooking and baking, as it can easily blend with other ingredients. In addition to its culinary uses, melted butter can enhance the flavor of various dishes, such as popcorn or vegetables. It is also a key ingredient in many recipes, including sauces like hollandaise and baked goods like cookies and cakes.