When does butter occur with cookies?

1. As an ingredient: Butter is a key ingredient in most cookies. It provides:

* Flavor: Butter adds a rich, buttery flavor to cookies.

* Texture: Butter contributes to the chewy, soft texture of cookies.

* Structure: Butter helps bind the ingredients together and create a stable structure.

2. As a topping or glaze: Butter can be melted and brushed over cookies for a glossy finish and added richness.

3. As a filling: Some cookies have a butter filling, like butter cookies or shortbread cookies.

4. As a part of the baking process: Butter is used to grease cookie sheets to prevent sticking.

5. In the name of the cookie: Some cookies include "butter" in their name, such as "butter cookies" or "butter shortbread."

Overall, butter is a very common ingredient in cookies and plays a crucial role in their flavor, texture, and appearance.