Boy, does this ever take me back to learning how to cook on an old 4 burner barely modern stove. The 4 burners were on the left, the stove and broiler on the right. Oven on top, broiler at waist level with no gauge! We had to hang an oven thermometer from the bottom rack. I made my own gauge by putting hash marks in the appropriate locations. Besides the chips inside I've also seen them with a single kiss placed on the top as well. We left out the chocolate period; I was never a choc o-holic.
2 egg whites
3/4 cu sugar
1 Tb vanilla
6 oz chocolate chips (optional)
Beat egg whites slightly, add the sugar a little bit at a time til stiff. Add the vanilla continue beating to maintain stiffness. If you are adding the chips fold in now. Drop by tablespoon on to a foil covered (or silpat now) cookie sheet. At this point you would place the single kiss. Bake at 300 (25-30 minutes) makes 30 or so.