protein powder

I was wondering about protein powder and baking. I know the 140 degree rule but does that include baking?

I have never baked with protein powder, but you may try looking at "world according to eggface". I know she does a lot of baking with protein powders. 

Quest protein has a lot of baking recipes available.  I have their powder specifically for cooking and baking and have really enjoyed some of their recipes.

Different protein bases (plant vs whey, etc) provide different types of results when baking, so make sure you are using the right kind for the recipes.