shirley's sweet potato casserole

Ingredients

• 3 cups sweet potatoes, peeled, cooked and mashed
• 1 cup granulated sugar
• 1/4 teaspoon salt
• 1/3 stick butter or margarine, melted
• 1/2 cup milk
• 1 tablespoon butter flavoring
• 1 tablespoon pure vanilla extract or sherry extract
• 2 large eggs, beaten
• TOPPING
• 1 cup brown sugar
• 5 tablespoons self-rising flour, sifted
• 1/3 stick butter or margarine, melted
• 1 cup chopped pecans