Best Chocolate Pie

This is the best chocolate pie recipe and my sons' favorite.

3/4 c sugar
1/3 c cocoa
2 T cornstarch
2 T flour
1/4 t salt
1 3/4  c milk
2 egg yolks, slightly beaten
2 T butter
1 t vanilla extract
8 oz graham cracker crust

Combine sugar, cocoa, cornstarch, flour and salt in a medium saucepan. Blend in milk and egg yolks. Cook over medium heat, stirring constantly, until mixture boils; boil and stir 1 minute. Remove from heat; blend in butter and vanilla. Pour into 8 oz graham cracker crust. Press plactic wrap onto pie surface and chill overnight. Top with sweetened whipped cream or cool whip prior to serving. Makes 6 servings.

Tip: For a larger pie double the recipe and use a 9-inch graham cracker crust.

Microwave Directions:  Combine sugar, cocoa, cornstarch, flour and salt in a 2 quart microwave proof bowl. Blend in milk and egg yolks. Microwave on high for 5 minutes, stirring several times, or until mixture boils. Microwave on high 1 to 2 additional minutes or until mixture is smooth and thickened.