The Duchess of York made bat biscuits for her Storytime With Fergie and Friends YouTube channel. Sarah made sure she looked the part in a mini witch hat for the fun video.
She sat at a table decorated with pumpkins as part of the Halloween theme.
In her video, Sarah shared her delicious recipe for bat biscuits.
All you need is Oreos, chocolate, marshmallows, a black icing pen and edible eyes.
Sarah’s recipe involves melting the chocolate, before dipping a marshmallow in and putting it on top of an Oreo.
Cut another Oreo in quarters and use two of the pieces as wings on either side of the marshmallow.
Edible eyes are stuck on the front of the marshmallow and the mouth can be drawn on with the icing pen.
After being left to set the yummy bat biscuits are ready to eat.
Sarah announced she was making the treats in a post on Twitter.
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Speaking when she started her YouTube channel, Sarah said: “I’m in my favourite place ever, ever, ever, which is with children, thinking of children and thinking of all the children out there that just need a little bit of magic and you are not alone.
“Every day I’m going to do Storytime With Fergie And Friends – not just Fergie.
“You’ll have to wait and see – it’s going to be very exciting.
“And don’t worry they’re not very long books… or it could be long books.
“But let’s get a bit of magic going here, shall we?”
The first story Sarah read was Hairy Maclary by Lynley Dodd. She is sometimes joined by a special guest for videos.
Sarah, who signed a publishing deal for seven children’s books earlier this year, lives at Royal Lodge in Windsor with Prince Andrew,
The Yorks, who are parents to Princess Beatrice and Princess Eugenie, remain close despite their divorce in 1996.