Butternut Squash with sprinkles

1 small butternut squash, peeled, seeded and cubed (about 2 cups) 1/2 cup mayonnaise 1/2 cup finely chopped onion 1 egg , lightly beaten 1 teaspoon sugar salt[...]

1 (3 lb) butternut squash, peeled and deseeded 4 tablespoons butter 1 cup reduced-fat sour cream 1/4 cup finely chopped onion 1/4 cup shredded parmesan cheese[...]