Apple-Cream Coffeecake
["1/2 c. chopped walnuts", "2 tsp. cinnamon", "1 1/2 c. sugar", "1/2 c. butter", "2 eggs, unbeaten", "1 tsp. vanilla", "2 c. sifted flour", "1 tsp. baking powder", "1 tsp. baking soda", "1/2 tsp. salt", "1 c. sour cream", "1 medium apple"]
["Mix walnuts, cinnamon and 1/2 cup sugar.", "Set aside.", "Heat oven to 375\u00b0.", "Beat butter until creamy; gradually add 1 cup sugar, beating until light and fluffy.", "Add eggs, one at a time, then vanilla.", "Sift flour with baking powder, baking soda and salt.", "Beat flour mixture into batter alternately with sour cream. Spread half of batter in a well-greased 9-inch tube pan with removable bottom.", "Top with pared, cored and thinly sliced apples. Sprinkel with half of walnut mixture.", "Top with remaining batter, then rest of walnut mixture.", "Bake 40 minutes.", "Cool in pan on a wire rack for 30 minutes."]
["walnuts", "cinnamon", "sugar", "butter", "eggs", "vanilla", "flour", "baking powder", "baking soda", "salt", "sour cream", "apple"]