Wash your hands and clean your preparation area. Rinse sweet potatoes under cool running water prior to cooking.
Preheat oven to 350*F.
Place your mashed sweet potatoes in a large bowl. Add the eggs, salt, dried cranberries, and vanilla extract with the sweet potatoes and stir until well combined.
Spread ingredients in a greased 9X13-inch baking dish.
Walnut Topping
Using a spoon or baking spatula, mix walnuts, quick oats, and brown sugar in a bowl. Add softened butter and mix until well combined.
Spread across the top of the sweet potatoes in the baking dish.
Bake casserole for 20-25 minutes or until it reaches 145*F