5 sweet potatoes, sliced
1/3 cup margarine, softened
1/2 cup packed brown sugar
3 tablespoons orange juice, or to taste
1/2 teaspoon salt
1 teaspoon ground cinnamon
1/2 teaspoon ground ginger
1/2 teaspoon ground nutmeg
1 egg
2 matzo crackers, crushed
1/2 cup margarine, melted
1/4 cup packed brown sugar
1 pinch ground cinnamon