1 c. all-purpose flour
1/8 tsp. salt
3 tbsp. vegetable shortening
3 tbsp. plus 1 tsp. ice water
1 tsp. lemon juice
Vegetable cooking spray
1/2 c. sugar
1/4 c. plus 1 tbsp. unsweetened cocoa
1/4 c. cornstarch, divided
2 c. 1% low fat milk
1 egg, lightly beaten
2 tsp. vanilla extract
4 egg whites
1/4 tsp. cream of tartar
1/3 c. sugar

Combine flour and salt in a bowl; cut in shortening with a pastry blender until mixture resembles coarse meal.

Combine ice water and lemon juice. Sprinkle ice water mixture, 1 tablespoon at a time, over surface of flour mixture; toss with a fork until dry ingredients are moistened. Gently press dough into a 4 inch circle on heavy duty plastic wrap; cover with additional plastic wrap.

Roll dough, still covered, into an 11 inch circle. Place dough in freezer 5 minutes or until plastic wrap can be easily removed. Remove plastic wrap; fit dough into a 9 inch pie plate coated with cooking spray. Fold edges under and flute; prick bottom and sides of dough with a fork. Bake at 425 degrees for 14 minutes or until lightly browned; set aside on a wire rack.

Combine 1/2 cup sugar, cocoa and 3 tablespoons plus 2 teaspoons cornstarch in a medium saucepan. Gradually add milk, stirring with a wire whisk until well blended. Bring to a boil over medium heat, and cook 1 minute, stirring constantly.

Gradually stir about 1/4 of hot cocoa mixture into beaten egg; add to remaining hot cocoa mixture, stirring constantly. Cook an additional minute or until thickened and bubbly, stirring constantly. Stir in vanilla. Pour mixture into prepared crust; cover with plastic wrap, and set aside.

Beat 4 egg whites (at room temperature), remaining teaspoon cornstarch and cream of tartar at high speed of an electric mixer until foamy. Gradually add 1/3 cup sugar, 1 tablespoon at a time, beating until stiff peaks form. DO NOT OVERBEAT.

Remove plastic wrap from filling. Spread meringue evenly over filling, sealing to edge of pastry. Bake at 325 degrees for 25 minutes; let cool 1 hour on a wire rack. Chill 3 hours or until set.