Sweet Potato Casserole

Filling:
3 Cups Cooked, Mashed Sweet Potatoes
1 Cup Sugar
2 Eggs
1/2 Cup Milk
1/2 Stick Margarine
1 tsp Vanilla

Topping:
1 Cup Brown Sugar
1/3 Cup Margarine
1/2 Cup Flour
1 Cup Chopped Pecans

Mix filling ingredients until smooth.  Pourinto well-greased casserole dish.  Mix topping ingredients with fork or by hand.  Crumble on top of filling mixture.  Bake at 350 for 30-35 minutes.