Beat eggs until light and fluffy. Gradually add sugar, oil, and vanilla. Sift together next 5 ingredients and add to first mixture. Stir in apples and walnuts. Pour into a greased 13 x 9 x 2 inch pan, and bake in a preheated oven at 350 degrees for 45 minutes. Let cool in pan, then spread with frosting.
1 (3 oz.) pkg. cream cheese, at room
3 tbsp. butter or margarine, softened
Pinch of salt
1/2 tsp. vanilla
1-1/2 c. confectioners sugar
Mix all ingredients together until they are smooth. Spread on cake.