Preheat oven to 350.
Beat sweet potatoes with an electric mixer until light and fluffy.
Mix in butter, cinnamon, orange juice, eggs, and salt.
Transfer to a 2 quart dish.
Mix pecans and brown sugar in a small bowl.
Sprinkle topping over sweet potatoes.
Bake for 30-40 minutes. The center will be firm and edges lightly brown.