Allow cream cheese to become room temperature (softened) before putting in bowl. Use the sides of the bowl to soften.
Mix in pumpkin purée and Greek yogurt.
Followed by adding whey, baking powder, and extract.
Add spices in one at a time to find your desired ratio.
The batter will be the consistency of brownie batter if not thicker. It should not be thin. Add more whey or baking powder to thinking (or xanthan gum).
Pour batter into ready graham crust and let look for about 30-45 mins or until done!