From a Marshall Fields recipe card:
Ozark Pudding (4-6 servings) 1/3 cup pre-sifted flour 1-1/4 tsp. baking powder 1/8 tsp salt 1 egg 3/4 cup sugar 1/2 cup chopped nuts 1/2 cup chopped apples 1 tsp vanilla 1. Preheat oven to 325°. Grease a 1 qt. casserole. 2. Onto a piece of waxed paper sift together flour, baking powder and salt. 3. In mixing bowl, beat egg and sugar until light and creamy. Add flour mixture; blend well. Fold in apples, nuts and vanilla. Turn into casserole. Bake 30 minutes. 4. Serve with either whipped cream or vanilla ice cream.