Sweet Potato Casserole

Sweet Potato Casserole
We make these even when it's NOT Thanksgiving - a versatile recipe! Yummy! They are like dessert!

3 medium sweet potatoes
1/2 Stick of butter, softened
1/2 cup of brown sugar
1/3 cup of granulated sugar
1/2 teaspoon of cinnamon
1/4 teaspoon of nutmeg
2 teaspoons of vanilla extract
large marshmallows
pecan pieces or walnut pieces (optional)

Boil sweet potatoes for about 40 to 50 minutes. Let them cool and peel. Put everything except the marshmallows into a bowl, and using an electric mixer blend thoroughly. Place the whole mixture into a prepared casserole dish and bake in a 350 degree oven for about 20 minutes. Remove from oven and add marshmallows.
Return casserole to oven at bake at 400 degrees for about 5-10 minutes or until marshmallows are browning on top. Eat and Enjoy!