Directions:

In a mixing bowl, cream butter and sugar. Add the egg.

Combine flour, baking powder, baking soda and cinnamon; gradually add to the creamed mixture, beating just until combined. Stir in apple and walnuts.

Pour into a greased 8-inch square baking pan.

Bake at 350 F. for 35-40 minutes or until a toothpick inserted near the center comes out clean. Cool on a wire rack.