Sweet Potato Casserole With Marshmallows

8 average-size sweet potatoes
1 tbsp. vanilla extract
3-5 tbsp. sugar (to taste)
½ stick butter
½ tsp. cinnamon
¼ tsp. nutmeg
¼ cup orange juice
One bag marshmallows

Boil (or bake) sweet potatoes until done. Remove peeling from hot potatoes and mash well, removing all strings. Add all ingredients except marshmallows, and mix well. Spray or grease lightly 9” x 13” baking dish. Place potato mixture in casserole dish and bake at 350° F for about 20 minutes (until hot). Remove from oven and top with marshmallows (and extra cinnamon if desired). Return to oven to brown lightly. Serves 10 to 12.