Most of the time I just crack an egg on top of the boys' normal food (raw diet in my case, but good on kibble, too). But it is always fun to let them try to figure the egg out by themselves now and then.
Note that the egg shells are completely edible by your pooch as well. Not all dogs will readily eat the shells, but if they try, let them! I also save up the shells from eggs I use for myself and crush them over meals or bake them into dog treats. Yum yum calcium!
When offering raw eggs to your dog, I wouldn't give more than 1-2 a week. They are pretty rich and can lead to some rocket-butt in some dogs.
Now please enjoy some egg-y fun!