Here are a few options you could use, depending on the context:
Informal:
* Stack of pancakes: This is the most straightforward and common way to refer to multiple pancakes.
* Pile of pancakes: Similar to "stack," but suggests a more haphazard arrangement.
* Batch of pancakes: This implies they were made together.
More creative:
* Pancake family: This is playful and could be used if you're referring to a group of different-sized or flavored pancakes.
* Pancake symphony: This is a bit dramatic, but could work if you're describing a colorful and varied assortment of pancakes.
Ultimately, the best collective noun will depend on the specific situation and the tone you want to convey.