Sweet Potato Casserole

2 large (29 oz) cans yams, drained
2 eggs
1/2 c. canned milk
1/2 - 1 cup sugar
1 tsp vanilla
1/2 cup butter
1/4 tsp salt
1/2 tsp nutmeg
1/2 tsp cinnamon
1 tsp butter flavoring

Topping:
1/2 cup flour
1/2 cup brown sugar
1/2 cup coconut (optional)
1/3 cup butter
chopped pecans

Drain and mash the yams in a bowl. Add milk, eggs, vanilla, butter, sugar, salt, nutmeg, cinnamon and butter flavoring. Mix until smooth. Pour into a greased 8x8 inch casserole dish. Sprinkle with topping. Bake uncovered at 350 degrees for about 30 minutes.