Sweet Potato Casserole
["1 1/2 c. cooked, mashed sweet potatoes", "1/2 c. white sugar", "1/4 tsp. salt", "1 egg, beaten", "1/4 stick butter", "1/4 c. milk or heavy cream", "1/4 tsp. vanilla", "1/2 c. walnuts", "1/2 c. brown sugar", "1/4 c. flour", "3 Tbsp. butter (soft)"]
["Mix white sugar, salt, egg, butter, milk and vanilla. Then add to sweet potatoes. Place in a greased 1-quart casserole. With a fork, mix walnuts, brown sugar, flour and butter. Place on top of sweet potato mixture. Bake at 350\u00b0 for 35 minutes."]
["potatoes", "white sugar", "salt", "egg", "butter", "milk", "vanilla", "walnuts", "brown sugar", "flour", "butter"]