Cherry Crumb Pie

Pie:
1 unbaked pie shell, 9 or 10 inches
1 can cherry pie filling
1 can red cherries packed in water (do not drain)
2 T. flour
1 tsp. lemon juice
1/8 tsp. cinnamon

Sugar crumb topping:
¾ cup packed brown sugar
¼ cup sugar
¾ cup flour
¼ tsp salt
½ cup butter
½ cup chopped walnuts  (optional)

    Mix pie ingredients together and pour into a 9 or 10 inch pie shell.  Blend together topping ingredients and sprinkle over cherries.  Bake at 425 for 15 minutes, then reset oven to 350 and bake for 35 to 40 minutes.