Step 1

Preheat oven to 350 degrees F. Grease a 8x8 inch baking pan.

Step 2

In a medium bowl, mix together butter, brown sugar and egg until smooth. Stir in applesauce. Combine flour, baking soda, salt and pumpkin pie spice; stir into the applesauce mixture until well blended. Spread evenly into the prepared pan.

Step 3

Bake for 25 minutes. Remove from oven and cool on a wire rack.

Step 4

In a small bowl, cream together the cream cheese and butter until smooth. Mix in vanilla, then slowly mix in the confectioners' sugar. Spread over cooled bars before cutting into squares.