Zoe Ball and Alison Steadman help the TV cook in the kitchen. Plus: what happened to Mozart’s musical prodigy sister Maria Anna? Here’s what to watch this evening

9pm, BBC One
Mary Berry celebrated her 90th birthday this year but she shows no sign of slowing down in the kitchen this Christmas. Pigs in blankets cassoulet, cherry and lemon millefeuille, and a pear and ginger steamed pudding are all on her menu, as she is joined by Alison Steadman, Harry Aikines-Aryeetey and Zoe Ball. Berry also needs to pick a Christmas tree – and so she sets off for Windsor Great Park. Hollie Richardson

From Judi Dench’s very naughty tea with Kenneth Branagh to the Peep Show Bake Off special – including Olivia Colman! – here’s your definitive guide to the best holiday viewing. Bring it on

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A documentary about the cover-up of barrister John Smyth, who subjected more than 100 boys to abuse. Plus: Ellie Taylor’s standup special. Here’s what to watch this evening

9pm, Channel 4
This devastating two-part documentary details the crimes of John Smyth, a barrister involved in conservative evangelical Christian camps. Over the course of four decades, Smyth subjected more than 100 boys to horrific sexual and physical abuse. Why wasn’t he stopped? Witnesses, including his victims and his own children, speak about life in close proximity to this monstrous man – and about the cover-up that meant he never faced justice. Phil Harrison