Place pancake mix and salt in a large bowl. Add milk, egg and butter. Stir until batter is fairly smooth. Stir in potatoes and onions. For each pancake, pour about 1/4 cup batter on a lightly greased hot griddle. Bake to a golden brown, about 4 minutes for each side. Turn only once. >From Patricia Bollinger, Marble Hill, Mo. Typed by "Essie" Ethel R. Snyder