Chocolate Pizza Pie

Mix cocoa and flour in top of a double boiler over hot water and whisk in about half of the 1 cup of water, just enough to make a smooth paste.

Blend in the sugar and the beaten egg yolks and add remaining water and milk.

Cook over low until the mixture is thick; add butter and vanilla.

Pour into baked pie crust.

Top with cream, chocolate flakes, nuts or simply dust it with cocoa powder on it.

Refrigerate it for 3-4 hours, serve chill thoroughly.