This is from Jessica Simpson's book Deceptively Delicious. I have not tried it yet, and the book doesn't come with nutritional information, so I thought I would file it here and get the info!
preheat the oven to 400 degrees F. Coat 4 (1/2 cup) ramekins or coffee cups with cooking spray and set on a baking sheet.
If cheese is not already grated or shredded, do so now.
in a large bowl, whisk the eggs, egg whites, squash puree, cheese, flour, baking powder and salt until combined. Divide the mixture among the ramekins or cups and bake until the tops are puffed up and the eggs are no longer runny in the center when pierced with the tip of a knife, 13-15 minutes.