The signature challenge will see them make three different types of savoury canapé – from choux to shortcrust to rough puff – in just two-and-a-half hours.
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In the technical challenge, bakers will attempt the ambitious Charlotte Royal, a complex dome cake which will test techniques they have learnt throughout the series.
The final challenge sees them put their own spin on the iconic Parisian patisserie, Opera Cake.
Bake along at home with one of HELLO! Online's semi-final recipes.