01 -
Heat milk with vanilla until bubbling around edges. Meanwhile, whisk together flour, cornstarch, sugar, salt, and egg yolks with a splash of warm milk. Gradually incorporate remaining milk, return to heat until thickened, then whisk in cold butter in two additions. Strain and chill.
02 -
Heat water, butter, sugar, and salt until bubbling. Add flour all at once, stir vigorously, then cook for 2-3 minutes. Cool slightly before beating in eggs gradually until proper consistency is reached.
03 -
Pipe 2 tablespoon-sized mounds onto lined baking sheets. Smooth tops with wet finger, dust with powdered sugar, and bake at 180°C (fan)/355°F for 40 minutes. Cool in oven with door ajar.
04 -
Combine chocolate, butter, brown sugar, and cream. Heat gently until smooth, either in microwave or over double boiler. Allow to cool slightly before using.
05 -
Pierce bottom of each pastry, fill with cream, then dip tops in chocolate sauce. Let set for 10 minutes before serving.