Butternut Squash Bake without sausage

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[...]

1/3 cup butter or 1/3 cup margarine , softened 3/4 cup sugar 2 eggs 1 (5 ounce) can evaporated milk 1 teaspoon vanilla extract 2 cups mashed cooked butternut[...]