You know everyone ends up eating five or six tarts anyway, so why not just make individual pies? A double crust pastry recipe gave me enough for four, which if you're doing the maths is 1/4 of a pie. What the hell, enjoy Christmas. Have some eggnog.
I bought the small, square ceramic dishes at last year's after holiday sales. I think they cost .25 cents. They were cute enough to serve in, but I find unmoulding tarts (or pies, if you will) and cooling on a rack keeps the crust nicer. They could easily be slipped back into the dishes to serve.