Eggs are good for their eyes, their coat and improves brain function. So... Cash gets scrambled eggs with some kibble and garlic on weekends. I also used to mix raw egg into the kibble for some meals. They loved it!
Just a note: If your dog won't eat, don't ever fix her something better for the same meal. If you do this once, they will hold out for something better next time. Try putting the food down for 15 minutes at mealtimes and then taking it away. Give the leftover food again for the next meal - unless it has gone bad.
Cash is such a fussy eater that I constantly struggle to get him to eat, but the eggs he likes.