How many people would one pound of penne pasta serve?!

I have what looks like an awesome recipe (Pasta with roasted garlic & Ham) from Rachael Ray and it calls for 1 lb of penne pasta however her recipe does not state how many people the recipe serves (it's 1 lb of the pasta, 1 whole cauliflower head & 1/3 lb sliced boiled ham)!. One pound sounds like a lot to me for 3 people so I was just curious what all you "cooks" out there would guestimate how many this would serve!.

I don't mind left overs but sometimes you get way too much left overs if you know what I mean!

Thanks a bunch!Www@FoodAQ@Com

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