Sweet Potato Souffle

I know everyone has their traditions on Thanksgiving, everyone has their own way to make sweet potatoes. This is how my family does it, and has been since I can remember. We don't use marshmallows, like so many other families. This is seriously the best thing ever. It's like a dessert, so deliciously delicious!

Sweet Potato Souffle

Ingredients
3 cups sweet potatoes, cooked and mashed
1 cup sugar
2 eggs
4 Tablespoons butter
1 teaspoon vanilla

-topping-
1/3 cup butter
1 cup brown sugar
1/3 cup flour
1 cup chopped nuts, optional

Directions
1. Mix together potatoes, sugar, eggs, 4T butter, and vanilla.
2. Put in a 9x13 baking dish.
3. Combine brown sugar and flour.
4. Mix with melted butter.
5. Sprinkle on top of potatoes.
6. Bake 30 minutes at 350F.