I came across this idea from Skip to My Lou and loved it! It gets the kids smiling, even in the morning!
First I put the faces on the grill, flip them, and then add the remaining batter around it to create the face. Then I flip the whole pancake once more to cook it through.
This way they eyes and mouth "pop" and it looks like a carved pumpkin. The kids also enjoy adding blueberry or chocolate chip eyes and a strawberry nose.