Preheat oven to 350ยบ. Grease 9x9 inch pan. In mixing bowl, mix together melted butter, applesauce, Splenda, Ideal, vanilla and egg until smooth. Blend in flour until just combined, then stir in apples and nuts. Spread batter into prepared pan. In small bowl, mix sugar and cinnamon and sprinkle over top of batter. Bake for 25-30 minutes until top springs back when touched. Cool and cut into 9 squares.