Made this today....I added sliced tomato and some seitan with smoked salt for a bacon flavor. I also added some Worcestershire sauce [1/4 tsp] to the sauce. It all turned out tasty.
I hear some people make it with cilantro too. I've added red bell before and sometimes onion. Feel free to experiment...but don't forget to chop things VERY FINE!
Sunday Morning Tofu Benedict with Hollandaise Sauce