tuna scalloped potatoes

Description Tuna, potatoes and onions, layered and topped with a mushroom soup and mustard sauce, then baked. Ingredients 6 cups baking potatoes, peeled and sliced ¼ cup yellow mustard ½ cup all-purpose flour 3 ½ cups milk 1 teaspoon salt ½ cup condensed cream of mushroom soup 2 (5 ounce) cans tuna, drained 1 ½ cups thinly … Read more