I LOVE my rice cooker. I don't just cook rice in there either. With the pumpkin though, I think it would probably hold the liquid just fine if you wanted to try it that way. If you do try it let us know how it goes.
I quit smoking on Oct. 20, 2008 Now I right and more.
I do this as well every fall with different variations on the ingredients and it's always a big hit! Most recently, I tried a version from the Eat-Clean Diet Cookbook with dry mustard, lean ground bison, green onion, and wild rice. It was delicious. I usually don't stuff with meat but had to try this one b/c it looked yummy, it was!
I used pumpkins for my annual Halloween party last year. I did something similar to the dish you named in a larger pumpkin, and I made a vanilla custard in a small pumpkin. It keeps well with American tradition. Pumpkins used to be stuffed with food all the time in colonial days.