Dec 28, 2007
As others have mentioned, the flavor of the original recipe is rather on the light side. For a richer Irish Cream Flavor, double the Irish Cream to One (1) full cup, and also increase the whole egg plus one egg yolk to two full eggs.
I found no need to mix the egg yolk into the batter prior to adding the whole egg; just add the whole eggs all at once.
With this new formulation, the batter, immediately after mixing, is soft enough to be scooped into a piping bag and piped onto the cookie sheets. Done so, baked for the recommended time, makes excellent cookies with no need to refrigerate for hours and roll out the dough.
—Leo M. Lalande