1 c. flour
2 tbsp. sugar
1/2 c. butter
1/4 c. nuts, chopped
3/4 c. sugar
2 tbsp. corn starch
1 1/2 c. cold water
1 box blackberry Jello
4 c. blackberries

Mix flour, 2 tablespoons sugar, butter, and nuts. Pat into 7x10 inch pan. Bake at 350 degrees for 15 minutes.

Boil 3/4 cup sugar, corn starch, and cold water until clear. Add box of Jello. Stir until dissolved. Cool. Add 4 cups blackberries. Add mixture to crust and top with Cool Whip.