Preheat broiler.
In a frying pan, sauté onion and whole pimientos in butter and a touch of olive oil. Sauté for 3 minutes. Put aside while you broil the steak.
Broil the steak to your desired doneness.
When it is done, slice the steak at an angle and place on top toast.
Spread onions and pimientos on top.
Pour melted butter and parsley over onions and pimientos.
