Mix thoroughly:

3/4 c. melted butter
1 c. sifted powdered sugar
2 c. (1 pkg.) graham cracker crumbs

Press into 9 x 13 inch pan or 8 1/2 x 11 x 1 1/2 inch. Beat until smooth:

2 eggs
1/2 c. sugar
6 (8 oz. ea.) pkgs. softened cream cheese

Pour onto crust. Bake 20 minutes. Top rack cool. Mix and cook to thicken first 1 cup sugar and 3 tablespoons cornstarch then 1 tablespoon lemon juice, 3 cups blueberries and 2 tablespoons water and 1 tablespoon lemon juice. Thicken and cool. Spread on baked crust. Chill. Spread whipped cream or Cool Whip onto serve.