Boil sweet potatoes until tender, about 30 minutes.

Preheat oven to 425°F.

Grease 1 quart casserole dish.

In a large mixing bowl, mashed sweet potatoes.

Add pineapple juice and butter, beat until fluffy.

Stir in pineapple, cinnamon, nutmeg, and allspice.

Optional topping: Drizzle molasses/sprinkle brown sugar and dot with butter.

Oatmeal topping: Combine dry ingredients, add melted butter, spread

Bake, uncovered, for 15 minutes, or until thoroughly heated.