Scalloped Potatoes

6 medium potatoes, peeled and sliced
1 medium onion, sliced
2 tablespoons flour
2 cups whole or evaporated milk
Salt and pepper to taste
3 tablespoons butter or margarine

In a 2-quart greased casserole dish, layer potatoes and onion.  In a jar, combine flour, milk, salt, and pepper.  Screw lid on tightly and shake well until smooth.  Pour milk mixture over potatoes, and dot with butter.  Bake uncovered at 350 degrees for 1 hour.  Makes 6 servings.

(Source:  Utah State Fare, pg. 145)