I think its fantastic apple flavor is due to the apples being in larger chunks rather than finely chopped.
Chunky Apple Cake with Cream Cheese Frosting
1/2 cup butter, melted
Stir together first 4 ingredients in a large bowl until blended. Combine flour and next 3 ingredients; add to butter mixture, stirring until blended. Stir in apple slices and 1 cup walnuts. Spread into a greased 13x9-inch pan.
Bake at 350 degrees F. for 45 minutes or until wooden pick inserted in center comes out clean. Cool completely in pan on a wire rack. Spread with Cream Cheese Frosting; sprinkle with walnuts, if desired. Store in refrigerator.
Cream Cheese Frosting
1 (8-ounce) package cream cheese, softened
Beat cream cheese and butter at medium speed with an electric mixer until creamy. Gradually add sugar and salt, beating until blended. Stir in vanilla.