I just figured out what I was missing: the box didn't include the 1/4 cup of BUTTER that I'm to add to the mix. Oh, the box says to add it in the directions, and I did it just now. But, the little nutritional info box didn't dain to mention the butter-based nutrients that would, of course, be in the end product.
Oh, well. At least it's butter, and not an oil from a plant that also makes the fabric of my T-shirt.