Question: does costco pumpkin pie need to be baked?
Answer: 6_Pumpkin_cooked_twice_Slide_Edit. jpg. If you've ever made your own pumpkin puree you probably only cooked it once before using it in a recipe. The pumpkins that go into the Costco pumpkin pies are actually cooked twice, once when they are in chunks, before being pureed and then again, once they have been canned.