Twice-Baked Sweet Potatoes

This is another reason to own the Joy of Cooking - twice baked sweet potatoes!
Ingredients:
Sweet Potatoes
Heavy Cream
Butter
Salt
Equipment:
Oven at 400
1 baking dish
1 small bowl
1 large spoon
1 fork/potato masher
Procedure:

1. Pierce potatoes several times with a fork.
   
2. Bake potatoes for 1 hour
3. Slice potatoes in half and scoop out insides with a spoon.
4. In a small bowl, mash potatoes with heavy cream, butter, and salt to taste, then refill potato skins and bake at 375 for 30 minutes.