Yam Coconut Casserole

1 pound yams or sweet potatoes
1/2 cup (1 stick) unsalted butter
1/2 cup Coco Casa? Cream of Coconut
1/4 cup heavy cream
3 egg yolks
1/2 teaspoon cinnamon
1/2 teaspoon nutmeg
1/4 teaspoon salt
2 dozen large marshmallows
Ground cinnamon

Boil yams until tender and peel while hot. Place them in mixing bowl with butter, cream of coconut, heavy cream, egg yolks and spices. Whip until smooth. Place in casserole. Press marshmallows into mixture so they are half submerged. Sprinkle lightly with cinnamon. Bake in preheated 350 degree F oven for 30 minutes or until marshmallows are melted.

Serves 6.