I found this recipe on Cooks.com to use up some fresh apples, and it was a surprise! I'd never thought of a cookie topped with apples. It was really very good and even refreshing. We loved the cookie bottom, too.
In a large bowl, combine first 3 ingredients. Blend at low speed until crumbly. Stir in nuts. Press 2-3 cups of crumb mix firmly on an ungreased 13 x 9 pan. To remaining crumbs, add all other ingredients except apples. Blend well, stir in apples. Spoon batter evenly over crumb base. Bake at 350 degrees for 35-45 minutes until tested comes out clean. If desired, top squares with whipped cream or ice cream, or sprinkle with powdered sugar. Cool and cut into bars.