- Preheat oven to 350 degrees. 
- Place butternut squash half in a nonstick baking pan in oven, skin side up. Cook until fork-tender, about 25 minutes. 
- Scoop out cooked "meat" with spoon, and place with 1 cup of the canned pumpkin in a food processor. Puree. 
- In a large bowl, combine the squash/pumpkin mixture, remaining pumpkin, egg whites, lime juice, cinnamon, cardamom, soymilk, Splenda, and vanilla. 
- In food processor, grind corn flakes until they are the size of peppercorns. 
- Lightly spray bottom of pie baking pan (8 inches in diameter) with Pam, or use 8 individual-size pans.  To make crust, press corn flakes into bottom of pan (s). 
- Fill pie pan (s) with pumpkin mixture, and bake in oven at 350 degrees for 30 minutes. 
- Insert a party favor pumpkin into pie (s), and, if desired, garnish with a blackberry and a sprinkle of corn flakes, and place in a dish with blackberry puree.