4 cups of cooked and mashed sweet potatoes

1 and 1/3 cups of chopped pecans.
1/2 cup of melted butter
How to Prepare a Sweet Potato Casserole from the Southern United States
Heat the oven to 375 degrees Fahrenheit and grease a baking dish that measures 9 by 13 inches.
In a big bowl, put sweet potato, brown sugar, cream, butter, egg, vanilla, and salt. Mix until completely smooth.
Put the sweet potato mixture in the baking dish and spread it out evenly.
Mix sugar, flour, pecans, and melted butter in a small bowl until it becomes crumbly. Put on top of the sweet potatoes.
Cook in the oven for 35 minutes. Let the dish cool for at least 20 minutes before serving.