1 can apple pie filling or cherry
1 tsp. lemon juice
1 pkg. white or yellow cake mix
1/2 c. nuts
1/2 c. melted butter

Spread pie filling on bottom of 13 x 9 inch pan. Sprinkle lemon juice on top. Combine cake mix, nuts, and melted butter until crumbly. Sprinkle over pie filling. Bake at 350 degrees for 40-50 minutes. Serve warm with Cool Whip or ice cream.