Pan fried Monkfish and tomato capered stew

I just saw a recipe on PBS with Lidia. She took the monkfish and fried it. Then in pan the following were carmelized onion and then added red pepper flakes. Then either finely chopped celery or green pepper was fried in the pan. Added were a bunch of capers and green olives. Crushed tomatoes were then put in and heated and then the fish went in to simmer. Fish was put on plate with polenta and the mixture were spooned over it. (You can use rice instead ).