Cherries in the snow

You will need 1 1/2 sticks margarine
1 1/2 c. Flour
1/2 c. Chopped pecans
2 Tbsp. Sugar
1 (8oz) pkg cream cheese
2 c. Powered sugar
1 tsp. Vanilla extract
9oz. Cool whip
Mix the first 4 ingredients together. Press in 8x12 inch long pan and bake at 350 for 20 mins. Cool. Mix next 3 ingredients until creamy. Add cool whip. Spread over cooled crust and top with a large can of cherry pie filling.