Tuna Scalloped Potatoes recipe

8 servings

6 cups baking potatoes, peeled and sliced

1/4 cup yellow mustard

1/2 cup all-purpose flour

3 1/2 cups milk

1 teaspoon salt

1/2 cup condensed cream of mushroom soup

2 (6 ounce) cans tuna, drained

1 1/2 cups thinly sliced onions

Bring a large pot of salted water to a boil.

Add potatoes and cook until tender but still firm, about 10 minutes; Drain.

Preheat oven to 300 degrees F (150 degrees C).

In a saucepan, combine yellow mustard, flour, milk, salt and 1/2 cup of soup.

Mix thoroughly and heat until thickened.

Starting with the potatoes, arrange the potatoes, tuna and onions, in alternating layers in a 9x13 inch baking dish.

Pour the mustard sauce all over the top.

Bake in a preheated oven for 1 hour or until hot and bubbly.