Other contributors have said "How many rabbits were needed in Welsh Rabbit?" is the same question as "How many rabbits were needed in Welsh Rarebit?" If you believe that these are not asking the same thing and should be answered differently, click here
LOL Welsh Rabit is neither from Wales nor a rabbit. It is Welsh Rabit (Rare bit) i.e., melted cheese poured over toast and butter - and is eaten all over the British Isles, and beyond. Enjoy !