Does a sour cream topping for cheesecake need to be baked?

The sour cream topping is usually added after the cheesecake is baked and cooled. The heat from the cheesecake will gently warm the topping and help it to set.

Here's why it's usually not baked:

* Texture: Baking the sour cream topping can make it too firm and dry.

* Flavor: Baking can also affect the tangy, creamy flavor of the sour cream.

However, there are some variations that do involve baking the sour cream topping, typically for a more robust flavor or a slightly browned surface.

If you're unsure, check the specific recipe you're using. If it doesn't specify, you can usually safely assume that the sour cream topping is not baked.