1 (9 inch) unbaked pie crust
2 cups cooked and mashed sweet potatoes
2 eggs
3/4 cup white sugar
1/2 teaspoon salt
1 teaspoon ground cinnamon
1/2 teaspoon ground ginger
1/4 teaspoon ground cloves
1 2/3 cups light cream
3 tablespoons butter, softened
2/3 cup packed brown sugar
2/3 cup chopped pecans