And, just for kicks, here is my favorite thing: Powdered Eggs. I love to use these especially in baking, then I don't feel bad about eating dough or letting my kids eat the dough.
And here's a second correction. Now that I have made these several times. . . I have found that using a part butter powder and 1/2 part water makes the perfect cookies. So, I have corrected the recipe above . . . again. . . sorry!