3 c. hot sweet potatoes, mashed
1/3 c. milk
1/2 c. butter
1 c. white sugar
2 eggs
1 tbsp. vanilla
1 c. light brown sugar
1/2 c. flour
1/3 c. butter
1 c. nuts (optional)

Mix first 6 ingredients and pour into casserole dish. Mix remaining ingredients with fork and sprinkle on top of the casserole. Bake uncovered at 350 degrees for 25 minutes.