Sweet Potato Casserole

I got this recipe from my sister - who got it from her dental hygienist! It's really good - but NOT low in points (like, ten points per serving) - but, hey, it's Thanksgiving!

Sweet Potato Casserole
3-4 sweet potatoes
1/2 cup butter
2 eggs, beaten
1 tsp. vanilla
1/3 cup milk

Topping:
1 cup chopped pecans
1/3 cup butter, melted
1 cup light brown sugar
1/2 cup flour

1. Cook potatoes until done and mash. Mix with rest of ingredients, and place in a 9 x 13-inch pan.
2. Mix topping ingredients, and spread on top.
3. Cook at 350 degrees for 30 minutes.