Cheesy baked pasta with Spinach & Artichokes

I found this one in the Real Simple.

8 oz mezzi rigatoni (or some other short pasta)
1 14 oz can artichoke hearts, rinsed and quartered
1 9 oz package frozen creamed spinach, thawed
1/4 cup grated Parmesan (1 oz)
2 cups grated mozzarella (8 oz)
Black pepper
(12 oz crab meat optional)

*Cook pasta according to directions, drain and return to the pot.
*Heat broiler
*Add artichokes, spinach, Paremesan, half the mozzarella and 1/4 tsp pepper to the pasta. Toss to combine.
*Transfer the mixture to a shallow 2 qt (or 8" square) broiler proof baking dish and sprinkle with remaining mozzarella. Broil until cheese is browned in spots, 2 to 3 minutes.

(The 2nd time I made this, I put in crab meat. Oh, that was yummy.)