Cake recipes need salt to bring all the flavors together. A little sugar helps too. Needs vanilla or nutmeg. A little veg oil in the pancake batter is helpful too.
Recipe wasn't bad other than what is stated above. Good technique with whipping the egg whites.
I added pinch of salt, a tablespoon of sugar, a 1/2 teaspoon of vanilla/nutmeg, and the recommended oil, except in the batter.