1/2 c. butter
6 sweet potatoes, cooked and mashed
1 tsp. baking powder
1 tsp. vanilla
2 tsp. ground cinnamon
2 eggs
3/4 c. sugar
3/4 c. buttermilk
3/4 c. pecans, chopped (optional)

Add butter to hot potatoes, combine with first 6 ingredients with mixer. Stir in pecans if desired. Place mixture in greased 2 quart casserole and bake at 350 degrees for 30 minutes. Top with marshmallows during the last 10 minutes of cooking. Serves 10 to 12.