Preheat oven at 400°F/ 205°C.
Combine MAYA Complete Hotcake Mix with cocoa powder.
Add water, one tablespoon at a time, enough to form a ball of dough.
Roll out to 9-inch pie plate.
Bake until golden brown. Cool.
Prepare filling. Combine sugar and cornstarch.
Gradually stir in evaporated milk.
Cook over double broiler stirring constantly until mixture thickens. Remove from heat.
Gradually stir half of the mixture into the beaten egg yolk.
Put back in saucepan and blend.
Cook until mixture coats spoon.
Blend in butter and vanilla. Cool.
In a bowl, whip half of the cream with powdered sugar until stiff.
Chill. In a saucepan, caramelize sugar in low heat then add butter and remaining all purpose cream.