Sweet Potato Casserole

配料

2 lbs Sweet Potatoes

1/2 cup white sugar

1/2 cup brown sugar

pinch of salt

pinch of nutmeg

1 teaspoon cinnamon (season to taste)

1 tsp lemon zest

2 tbsp all purpose flour

1/2 tsp vanilla extract

1/4 tsp butter extract

4 tbsp butter

2 beaten eggs

Topping:

1 Cup crushed pecans

5 tbsp melted butter

1/2 cup all-purpose flour

1 cup brown sugar

salt and cinnamon to taste